Scientific Hypotheses must be proposed in a way that explains in a comprehensive and testeable manner the relationship between variables. Option 3 is correct. Enables them to be tested.
What is a hypothesis?When following the scientific methodology, researchers must formulate a hypothesis.
A hypothesis is a scientific conjecture, not verified, that requires corroboration. It is a possibility, not a fact. It is a claim of how it works a relationship between two or more variables.
The researcher hypothesizes to predict what is going on or what is expected to occur.
A hypothesis
must be clear and comprehensive. must express the direct relationship between the involved variables. must be objective. must be testeable and falsifiableThere are different kinds of hypotheses: descriptive, correlative, differentiative, or causative.
Scientific Hypotheses must be proposed in a way that explains in a comprehensive and testeable manner the relationship between variables.
Option 3 is correct. Enables them to be tested.
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Complete question,
Scientific Hypotheses must be proposed in a way that
Ensures that the experiment will be validEnables them to be proved validEnables them to be testedDo not contradict previous hypothesisThe domestication of plants and animals in areas near the indus, huang he, nile, and tigris-euphrates rivers resulted in the development of villages and cities. The growth of early settled communities contributed to —.
The development of political and religious institutions is what the growth of early settled communities were contributed to.
The process of domesticating wild animals and plants into cultivated and domestic forms in accordance with human objectives is known as domestication. It refers, in the purest sense, to the beginning of human control over wild animals and flora.
According to some evidence, the first attempts at domesticating plants and animals were conducted in the Old World during the Mesolithic Period. Dogs were initially tamed by hunters and gatherers of wild food plants in Central Asia at least 15,000 years ago.
Early established communities expanded as a consequence of the rise of political and religious institutions, which assisted in the domestication of plants and animals in places near rivers, leading to the creation of villages and cities.
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In 2008, british retailer marks & spencer introduced a slogan "plan a. Because there is no plan b. ", which included a five year 100 point ecological plan to tackle some of the biggest challenges facing its business. The plan included working with customers and suppliers to combat climate change, reduce waste, safeguard natural resources and trade ethically. Their plan seems to correspond most with the concept of.
The inclusion of customers and suppliers to reduce waste, protect natural
resources and do ethical business are parts of sustainable development.
Sustainable development is the usage of natural resources for the human needs in a way that will preserve the environment that produces the resources so they can be used in the future. Scientists argue that sustainable development has many more benefits and that it also maintains biodiversity, ensures future resources for economic stability, encourages greater efficiency and often reduces the impact of natural disasters.
The main features of sustainable development are follows:
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What creates a sense not only of enclosure and connection, but also movement and direction?.
Implied line conveys a sense of direction and mobility in addition to enclosure and connection.
An inferred line is what?
An inferred line often depicts a little change in plane.
They are all implied by variations in color, tone, and texture as well as by the edges of objects.
A viewer's path to follow a figure's sight is illustrated here. It directs the viewer's gaze without actually displaying a line.
For instance, in portrait drawing, an inferred line is sometimes utilized across the nose's bridge or along the jaw to make it look more like the edge of a box.
thus, this creates a sensation of movement and direction as well as confinement and connection.
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Some neurons release neurotransmitter which affects neighboring cells, as well as themselves. this is an example of what type of signaling? choose any that apply.
A chemical secreted by one cell interacts with target cells nearby in paracrine signalling. The way neurotransmitters move signals between nerve cells at a synapse serves as an illustration.
After being produced, where are neurotransmitters kept?The terminal produces and stores small molecule neurotransmitters for quick release. Because they must be carried from the cell body to the terminal after being generated there, neuropeptides may release more slowly.
Small "packages" called vesicles are used to hold neurotransmitter molecules (see the picture on the right). When the vesicles containing neurotransmitters "fuse" with the membrane of the axon terminal, the neurotransmitter is released from the axon terminal and spills into the synaptic cleft
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Approximately how many atoms thick is a cell membrane, assuming all atoms there average about twice the size of a hydrogen atom?.
There are around 50 atoms in the cell membrane.
Knowing that the thickness of a cell membrane is somewhere between 7.5 and 10 nm will allow you to divide 7.5 and 10 by 0.2 nm, where 1 nm equals 1*109 m.
The cell membrane is roughly 37.5 and 50 atoms thick, according to the two answers of 47.5 and 50.
A hydrogen has a diameter of 10^ -10 m. A cell membrane has a 10^8 m thickness.
The formulae of thickness in terms of number of atoms = d /2 × D
Here the (d) = the diameter of membrane
The (D) = The diameter of hydrogen atom
The diameter of hydrogen atom = 10^-10 m
The thickness of membrane = 10^8 m
by substituting these value in above formulae
The number of atoms = 10^8 /2 × 10 ^−10 m
= 50 atoms
Consequently, the thickness of a cell membrane is equivalent to 50 atoms' total thickness.
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Lysosomes function in the destruction and recycling of old organelles. group startstrue or false
Lysosomes function in the destruction and recycling of old organelles. This statement is TRUE.
What are Lysosomes?
Animal cells have membrane-bound organelles called lysosomes. Though there is considerable disagreement on the subject, it is believed that some plant cells include lysosomes. They have a single phospholipid bilayer–containing outer membrane. The hydrophilic half of the phospholipid bilayer adores water, whereas the hydrophobic half avoids it. The membrane is made up of acids and enzymes that can break down and digest macromolecules. Nucleic acids, artificial polymers, and proteins are examples of macromolecules, which are molecules containing a huge number of atoms.
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A large island in the Pacific Ocean supports isolated populations of two groups of frogs. The following observations of these
frogs were recorded by scientists.
(A) Are different in color
(B) Excrete different products
(C) Live in different, isolated habitats
(D) Can interbreed and produce fertile offspring
Which observation best supports the inference that these frogs belong to the same species?
A. A
B. B
C. C
D. D
Answer:
D
Explanation:
The other factors have nothing to do with their relation to each other
how ocean temperature affects the climate of an area
Answer:
Water's High Specific Heat Capacity
Explanation:
Water is able to absorb large amounts of heat with little to no change in temperature for itself. Therefore, when warm air flows over the ocean, the water absorbs the heat from the air and releases cool air instead. This allows coastal environments to be cooler than other areas.
What are plastids? Where are they found? Name their types.
Answer:
Plastids are present only in plant cells there are two type of plastids chromoplast and leucoplast chromoplast containing the green pigment are known as chloroplast chloroplastor important for photosynthesis chloroplast also contain various Yellow or Orange pigments in addition to chlorophyll lucoplast are the primary organel is in which the material such as starch oil and protein granules are stored the internal organisation of chloroplast consists of numerous membrane layers embedded in material called stroma these are similar to mitochondria in external structure plastic also have their own DNA and ribosomes.
When a big fish swims into an oncoming smaller fish and swallows it, the momentum of the two-fish system _______.
When a big fish swims into an oncoming smaller fish and swallows it, the momentum of the two-fish system remains the same.
In this case, the Law of conservation of momentum principle is used as when a big fish swims into a smaller fish and also swallows it, then there will be no change in the system as the momentum of the two-fish system remains the same.
But when the momentum of the big fish exists in the same condition but since the final momentum is to be true, there arises a combined mass of the big fish as well as the small fish, whereas the case of speed must be reduced.
The Law of conservation of momentum is important as it states that the total momentum that occurred in the initial state of the system remains the same as the momentum that exists in the final state of the system. This conservation principle helps to determine the initial and final velocity of a system that undergoes collision. This collision can be either elastic or inelastic. According to this theory, the momentum of the two fish systems remains here.
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Even a country in which the birthrate and death rate are equal can experience population growth if it also has.
Answer:
If there is a number of immigrants coming into the country.
Explanation:
If immigration is taking place, as in people are moving into that country from abroad, that means the population is growing. I am not 100% if that is what you are asking, but I hope this helps!
I have three electron shells ,and one valence electron , who am I .
Answer:
lithium atom have three electron shells
Membrane proteins are among the most important proteins biologically because they allow the cells to communicate with their environments. These membrane proteins are responsible for all but which process?.
The correct option is (C) regulating intake of oxygen
Membrane proteins are among the most crucial in biology because they enable communication between cells and their surroundings. Other than controlling oxygen intake, these membrane proteins are in charge of.
What roles do membrane proteins play?The proteins that interact with the cellular membrane are known as membrane proteins. It is connected to opening ion channels, detecting foreign cells, and starting growth hormone responses.
Membrane proteins serve a variety of purposes, such as the following:
Cellular communication is facilitated by it.
Keep the cell form constant.
Work in accordance with the modifications that chemical messengers make.
Through the cell membrane, distribute the information.
Start a number of reactions.
It does not control how much oxygen is taken in.
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I understand that the question you are looking for is "Membrane proteins are among the most important proteins biologically because they allow the cells to communicate with their environments. These membrane proteins are responsible for all but which process?
A) triggering ion channels
B) identifying foreign cells
C) regulating intake of oxygen
D) activating growth hormone reactions"
5. An adaptation is an inherited characteristic that helps an organism
survive and reproduce in its environment. Over time, adaptations
become more and more common in the population. For example,
suppose that the water in a pond gets darker over a period of fou
years. The diagrams and table below show what might happen to a
frog population living in the pond.
Answer:
year light-colored frog dark-colored frog
1 6 2
2 4 4
3 2 6
6 0 8
question 1 - year 1
question 2 - dark-colored frogs increased while light-colored frogs decreased.
question 3 - dark-coloring is better suited for survival at year 3.
question 4 - dark color arose from mutation.
question 5 - yes, mutations arise randomly.
PLS PLS HELP! BRAINLIEST 25 POINTS!
Where do most hurricanes originate?
A. near the South Pole
B. in the equatorial region
C. in the Eastern hemisphere
D. below the ocean’s surface currents
Answer:
The answer is c.
Explanation:
Answer:
Most of the hurricanes that hit the United States come from Africa. It's a point off West Africa's coast near Cape Verde. High altitude winds form as a result of two clashing climates. The hot, dry Sahara dessert and the cooler, wetter regions to the south. The answer is C because Africa is in the Eastern Hemisphere
Explanation:
which population of flamingos is more dense : 15 flamingos in a 5 square meter area or 40 flamingos in a 10 square meter area
15 flamingos in a 5 square meter is only 3 flamingos per square meter. The correct answer is 40 flamingos in a 10 which is square meter is 4 flamingos per square meter.
The collective noun to describe a gathering of flamingos is flamboyance, an appropriate term for these colorfully-feathered creatures. They flock together by the thousands on salt flats, lagoons, lakes, and swamps around the world, where they can filter-feed for shrimp, algae, and insects.
Flamingos are serially monogamous. They mate for one year, get divorced, and find a new mate the next year. New mates are mutually agreed upon males and females both dance in search of a compatible partner.
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15 flamingos in a 5 square meter is only 3 flamingos per square meter. The correct answer is 40 flamingos in a 10 which is square meter is 4 flamingos per square meter.
40 Flamingos in a 10 which is square meter is 4 flamingos per square meter.
The average number of people in a population per unit of area or volume is known as population density. An area of 100 square metres with a population of 100 insects has a density of 1 bug per square metre.
The amount of people in a place is gauged by its population density. It is a typical value. By dividing the total population by the available space, population density is determined. The number of persons per square kilometre is the most used measure of population density.
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Lipids are a large group of substances that are in water. Many types of lipids with different structures and properties exist both in the body and in food. True or false?.
Answer: That is true.
Explanation: It is true because they are needed as an important part in life.
If the connection between the hypothalamus and pituitary were severed, damaging the neurons, the secretion of which type of chemical messenger (signal) would most directly be affected?
If the connection between the hypothalamus and pituitary gland were severed, the releasing hormone would directly be affected.
Releasing hormones are the peptide hormones secreted by the hypothalamus gland to stimulate the pituitary gland. In response to releasing hormones, the pituitary gland releases other hormones like gonadotropin, ACTH, and TSH.
The four types of releasing hormones released by the hypothalamus include:
1. Gonadotropin-releasing hormone (GnRH)
It stimulates the release of follicle-stimulating hormone (FSH) and Luteinizing hormone (LH).
2. Thyrotropin-releasing hormone (TRH)
It stimulates the release of thyroid-stimulating hormone (TSH) and prolactin from the anterior pituitary gland.
3. Growth hormone-releasing hormone (GHRH)
It stimulates the release of growth hormone from the anterior pituitary gland.
4. Corticotropin-releasing hormone (CRH)
It stimulates the release of adrenocorticotropic hormone from the anterior pituitary.
If the neurons connecting the hypothalamus and pituitary gland are damaged, the releasing hormones would be affected. Consequently, the secretion of all of the above hormones would be affected.
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Population growth and change is most immediately experienced as changes in the ratio of:________
Controlled experiment
What does Climate Efficiency mean?
Accurate recording of observations should be based on:
O impressions
O honesty
O ideas
Ofeelings
Answer:
Honesty
Explanation:
Hope this helps :)
Is the seedling population at day 21 in hardy-weinberg equilibrium, or is evolution occurring?
(1) The population is evolving, and there appears to be selection against genotype CYCY based on the genotype frequencies at day 21 to the expected frequencies and the observed frequencies at day 7.
According to the Hardy-Weinberg equilibrium, if no unfavorable influences exist, genetic variation in a population will remain stable from one generation to the next.
The information indicates that at Day 21, the seedling population is changing. From Day 7 to Day 21, the allele frequencies have evolved. The CGCY genotype is being selected for, whereas the CYCY genotype is being rejected.
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Question correction:
Compare the genotype frequencies at day 21 to the expected frequencies and the observed frequencies at day 7. Is the seedling population at day 21 in Hardy-Weinberg equilibrium, or is evolution occurring?
The population is evolving, and there appears to be selection against genotype CYCY.The population is evolving, and there appears to be selection against genotype CGCG.The population is evolving, and there appears to be selection against genotype CGCY.The population is in Hardy-Weinberg equilibrium.Which choice is not an example of a molecule?
O Mn
O H₂S
О КОН
O 03
You have a cup of warmed milk and a cup of vinegar you have a other cup but it’s empty . You pour the warmed milk and the cup of vinegar into the empty cup . (You stir for 1min and 30 sec) place a paper towel over a plastic bowl Pour the mixture into the paper towel to drain the water and filter the new substance. Is this a chemical or physical change?
Why do st. george, ut and salt lake city, ut have different climates?
Salt Lake City seems to be in a distinct state than southern Utah and the majority of the area east of the Wasatch.
In the vicinity of Salt Lake, several quite different geological regions are combined, so if you drive a few hours in any direction, you'll be in a very different region. For instance, if you travel east to Vernal, you'll think you're in a St. George suburb in the far southwest of the state. Even though St. George is over two hours away from Las Vegas, it is essentially a satellite of that city. It is located in a stunning red rock region with fields of black lava stone surrounding dormant volcanoes, canyons, arches, and palm trees. Geologically speaking, rather than merely politically, it seems like another planet. Culturally, anyone from Utah will feel at home in St. George, if they can endure the heat. It is still a very LDS town, but it is still managed by a small group of old-guard families who came here at Brigham Young's request nearly fifty years ago. Growing numbers of people have relocated from Northern Utah to this area, and an increasing number of people who grew up here and are happy to return are doing so now that the local economy is robust enough for them to do so.Learn more about the salt lake city with the help of the given link:
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G
Which statement about malaria is true?
a. Malaria is transmitted to humans through infection by the sporozoan "Plasmodium".
b. Malaria is carried by the female Anopheles mosquito.
C.
Malaria is caused by an animal-like protist.
d.
All are true.
All of the above statement provided are facts and characteristics about malaria, So The correct option is D.
Through the bites of female Anopheles mosquitoes that carries the parasites that cause malaria, people can experience this potentially fatal illness. It can be avoided and treated. The two most dangerous parasite species, Plasmodium falciparum and Plasmodium vivax, are among the five that cause malaria in humans.
Nearly half of the world's population is at the danger from malaria in 2020. Sub-Saharan Africa tops the list of the greatest number of cases and fatalities. However, there are also considerable numbers of illnesses and fatalities reported in the WHO regions of South-East Asia, Eastern Mediterranean, Western Pacific, and the Americas.
Thus, it is now concluded that Option D is the correct answer
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What is photosynthesis?
The most important trigger for aldosterone release is the renin-angiotensin mechanism, mediated by the renal tubules True or false
The answer is true. The renin-angiotensin mechanism, which is carried out by the renal tubules, is the most significant catalyst for aldosterone release. Extracellular fluid is the term used to describe the fluid that cells store (ECF). Filtrate shouldn't contain blood proteins or blood cells since they are too big to fit through the filtering barrier.
What causes the renin-angiotensin system to become active?A dip in blood pressure (lower blood volume) often causes the RAAS to be activated in order to promote water and electrolyte reabsorption in the kidney, which makes up
In order to control blood pressure, the renin-angiotensin-aldosterone system also affects blood volume, salt absorption, potassium secretion, water absorption, and vascular tone. Inflammation, apoptosis, and fibrosis are a few more RAAS-related activities that have been mentioned.
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Describe a chemical indicator. What is it? What is it used for? How does it work?
Please be really descriptive in your answer.
Answer:
A chemical indicator is a substance that changes color in the presence of a chemical reaction. Indicators are used in titrations to determine the point at which the reactants have been used up and the products have been formed. In acid-base titrations, indicators are used to determine the point at which the solution changes from acidic to basic. In redox titrations, indicators are used to determine the point at which the solution changes from reductive to oxidative.
Explanation:
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