Answer:
the years 1873–76 which, among many other discoveries, catalogued over 4,000 previously unknown species.
Explanation:
1 2 3 4 5 6
Chapter 2 (2.1) Study Guide
Directions: Answer the questions using your notes and study for them for the test along with
your worksheets. Make sure to submit your answers in google classroom before your block
begins.
1. Anything that has mass and volume
matter
2. The smallest functional unit of matter
3. An atom has 3 subatomic parts:
4.
carry a positive charge and are located in the
5. When two compounds are placed together and the result is something new, we know a
reaction has taken place.
6. Label the following examples as physical or chemical changes:
a. Burning paper
b. Nail rusting
Answer:
The smallest functional unit of matter: Atoms
An atom has 3 subatomic parts: Electrons, neutrons, and protons.
PROTONS carry a positive charge and are located in the: center of the nucleus in the atom.
Explanation:
HELP QUICK PLEASE!!!!!
Answer:
try C
Explanation:
it supports laws that protect the public from environmental hazards
What contributes to water's unique properties as a universal solvent, temperature moderator, and cohesive behavior? Hydrogen is a special element that does not have neutrons. The oxygen atoms of water molecules attract electrons more than hydrogen atoms. The properties are related to the crystalline structure of liquid water. The properties are related to the high electronegativity of hydrogen atoms. i think is B
Answer:
The oxygen atoms of water molecules attract electrons more than hydrogen atoms.
Explanation:
The uniqueness of water as a chemical substance is attriuted to its unique properties. These properties include being a universal solvent, having a high specific heat (temperature moderator), cohesive and adhesive nature etc.
This wonderful properties of water is due to its POLAR nature, which is when a substance has both positively and negatively charged parts to it. This is possible because the oxygen atoms (O) of water molecules attract electrons more than hydrogen atoms (H).
This POLARITY of water molecule is responsible for the HYDROGEN BONDING between water molecules and hence, contributes to the properties of water mentioned in the question (universal solvent, temperature moderator, and cohesive behavior)
Plz help I will mark you brainlist plz
Answer:
ISOTOPES
the same number of protons
but difference numbers of neutrons
IONS
because they have lost or gained one or more electrons
Answer:
atoms of the same element have same proton number but different nucleon number I hope this help u if u want more ask me
Commodity processors extract juice from oranges and
it in order to kill microbes and slow spoilage.
Answer:
Microbes
Explanation:
what are some alternatives to plastic
What are some alternatives for plastic
Answer:
paper, like instead of plastic straws you could use paper ones instead
Explanation:
Glass
Reusable Shopping Bags
Plastic Additives
Milk Protein
Grape Waste
Liquid Wood
PCL Polyesters
PHA Polyesters
PLA Polyesters
Starch-based Polymers
Hope this helps!! <3
What are some human interactions that are harming both the carbon and nitrogen cycles?
Im crying because im so in a hurry help me fastas you can in this science question.
Who was the first person to see cells under the microscope and give them name a Robert Hooke b Theodor Schwann c Anton van Leeuwenhoek d Matthias Schleiden
Answer:
a) Robert Hooke
Explanation:
The cell was first discovered by Robert Hooke in 1665, which can be found to be described in his book Micrographia. In this book, he gave 60 'observations' in detail of various objects under a coarse, compound microscope.
The first person to observe the cell under the microscope is Robert Hooke, who is present in Option a. Robert Hooke is the person who first observed cork cells under the microscope and gave them a name. Option a is correct
What is a cell?In the early stages of the earth, cells were not as developed as those of today's eukaryotes; they had RNA as genetic material, and later by evolution, today's eukaryotic cells developed. Those RNA-containing cells were extremely susceptible to mutation, whereas today's DNA-containing cells are not.
The eukaryotic cell contains numerous organelles that perform various functions, such as the lysosome, which degrades pathogens, the chloroplast of plants, which perform photosynthetic reactions, the nucleus of eukaryotic cells, which conserves DNA, and the mitochondria, which generate energy through cellular activities.
Hence, the first person to observe the cell under the microscope is Robert Hooke and gave them a name, who is present in Option a.
Learn more about the cell here.
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A student wants to create a liquid volcano. The student observes bubbles in the soft drink prior to opening it. The student first proceeds to open the soft drink bottle and place it on the floor. Next the student drops candy tablets into the drink using a rolled piece of paper, so that the tablets are able to fall into the drink continuously. The student notices a very powerful reaction as the drink fizzes and starts to bubble. In this scenario, what would be the catalyst ?
Answer: the candy tablets being added to the drink
Explanation: i’m on the test right now and that’s what seems more logical
Answer:
A student wants to create a liquid volcano. The student observes bubbles in the soft drink prior to opening it. The student first proceeds to open the soft drink bottle and place it on the floor. Next the student drops candy tablets into the drink using a rolled piece of paper, so that the tablets are able to fall into the drink continuously. The student notices a very powerful reaction as the drink fizzes and starts to bubble. In this scenario, what would be the catalyst ?
A: The candy tablets being added to the drink
Please help I’m dumb
Answer:
is this science.I love science.I will tell you tommorow
Lakes, rivers, or springs can form when
Answer:
A river forms from water moving from a higher elevation to a lower elevation, all due to gravity. When rain falls on the land, it either seeps into the ground or becomes runoff, which flows downhill into rivers and lakes, on its journey towards the seas. In most landscapes the land is not perfectly flat—it slopes downhill in some direction.
Lakes can be formed when glaciers melt, craters from meteorites or rivers.
springs when rainwater or groundwater is heated by magma underneath Earth's surface.
Explanation:
release energy to
2. Chemical reactions that take place in
carry out cell processes.
Answer:
Explanation:
All organisms require energy to complete tasks; metabolism is the set of the chemical reactions that release energy for cellular processes.hope it helps......Which order shows the levels of organization from smallest to largest?
O cell organ tissue organ system organism O cell tissue organ organ system organism
O cell organ system organ tissue organism
O cell organ organ system SHAK tissue organism
Answer:
Cell tissue organ to organ systems...........
Answer:
Cell tissue organ to organ systemshope this helps
If a carbon atom is bonded to two hydrogen atoms and two carbon atoms, what type of bond must exist between the
carbon atoms?
O single
O double
O triple
O quadruple
the answer is A. single .
Phosphorus is mainly stored in the
Answer:
Phosphorus is mainly stored in the soil and rocks in the form of phosphate.
Explanation:
i hope this helps
3. Write the complimentary sequence of DNA for the following strand:
5'-AATTAGGAGCCCAGCTTTGCCGA-3'
In activity c, you explored how temperature affects the concentration of dissolved oxygen in a pond use the three data points you collected for the cold Pond to determine the mean dissolved oxygen of the cold pond
Answer:
Add the three data and divided by 3.
Explanation:
Temperature has a great affects on the concentration of dissolved oxygen in a pond because temperature is responsible for the presence of high amount of dissolved oxygen in water. At low temperature such as in winter season, the amount of dissolved oxygen in water is higher while in warm temperature such as in summer season, the concentration of dissolved oxygen is lower. So for measuring the mean dissolved oxygen of the cold pond, you have to add the data and then divided by 3, you will get the average dissolved oxygen of the cold pond.
If one strand of the DNA reads:
ATCCGCAT
What will the complementary strand be?
Answer:
in rna the strand would be UAGGCGUA
G goes with C and A goes with U ( unless there is a T within the strand already then its an A that airs up with it )
Explanation:
but if its in DNA the strand will be TAGGCGTA
G goes with C T goes with A
Answer:
TAGGCGTA
Explanation: A with T: the purine adenine (A) always pairs with. the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with. the purine guanine (G)
lipids are used for long term energy storage in that fat cells or organism and can also act as an insulator in the winter time ?
true or false
Answer:
never heard of an question like this
Which of the following could be a sequence in the carbon cycle?
Answer:
plants take in carbon dioxide and produce glucose --> animals consume plants --> animals break down glucose and release carbon dioxide
Explanation:
The carbon cycle is the sequence through which carbon is cycled through ecosystems. The carbon cycle usually occurs in the following order:
First, plants take in carbon dioxide and convert it to glucose.
Then, animals consume plants and break down glucose through the process of respiration.
Finally, this process releases carbon dioxide back into the atmosphere, and the cycle continues.
If a squirrel climbs a tree at 16m/s how many meters will it travel every hour ? ____ m/hr
Answer:
57600
Explanation:
16x60x60
Brainiest please :D
The distance travelled per hour by the squirrel as it climbs a tree at 16m/s is : 57600m/hr
Determine the distance travelled every hourGiven data :
velocity = 16m/s
To determine the distance travelled per hour
16 m * 60secs * 60 minutes
= 16 * 60 * 60
= 57600 m
Hence we can conclude that the The distance travelled per hour by the squirrel as it climbs a tree at 16m/s is : 57600m
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Plsss helps plss
Extra 20 points
Rice, wheat, soybeans, and _______ are considered the four angiosperms that are responsible for early agriculture.
Answer:
Corn
Explanation:
I'm not 100% sure so lmk ig I'm right or wrong
Answer:corn
Ethylene
dormant
anther
stigma
fruit
temperature
Wind pollination required a great deal of excess pollen, just so some of it lands, by chance, in the right place. Animal pollination is more selective because animals pick pollen up and carry it directly to where it needs to be. Although there is still a chance that the pollen will be from the wrong plant species, plants can manipulate variations in animal behavior through the structures of their flowers, the time and season of flowering, or the rewards or attractive chemicals they produce to narrow the field of pollinators, and increase the chances of having exactly the right pollen put in exactly the right place.
Explanation:
Why is it beneficial for the earth to have both autotrophic and hypertrophic?
What do paleontologists do when they uncover incomplete fossils
Answer:
Explanation:
Paleontologists are scientists that study the history/existence of past lives by collecting and examining fossils. They use these fossils to determine the history and age an organism has existed. Fossils are remains of dead organisms (plants and animals) which serve as evidence of past lives that have existed on earth in the past. They could include bone remains or footprint of this animals.
Fossils (from bones) are however mostly incomplete because they decompose before they are "stored naturally" by sediments which covers them. When scientists discover this incomplete fossils, they are compared (if there has been similar fossils discovered before then) and are stored and transferred to the lab for examination. This examination includes anatomical comparison (to determine relatedness with other fossils/organisms), carbon dating (to determine age) and data comparison (which includes location and type of soil and habitat).
Charles Hillman, an associate professor at the University of Illinois, is conducting research into why children are better at problem-solving after exercise. He places 20 kids, approximately 10 years of age, on a treadmill for 20 minutes. Another group of 10-year-old kids sits in a chair for 20 minutes. Dr. Hillman then measures the brain wave activity of both groups. The group who exercised showed a 5% increase in the P3 waves, which occur during decision- making. What would need to be done in order to make this experimental outcome accepted in the scientific community? Group of answer choices More time would need to be allowed for the experiment. Other scientists would need to confirm the results by performing the same experiment. The same test would have to be done using a different type of exercise. Girls and boys would need to be tested separately and then together.
Answer:
Other scientists would need to confirm the results by performing the same experiment.
Explanation:
According to this question, an experiment was conducted by an associate professor, using 20kids, to discover why children are better at problem-solving after exercise. He arrived at a result that Children who exercised showed a 5% increase in the P3 waves, which occur during decision- making.
However, in order for this findings by Charles Hillman to be generally accepted and recognized in the scientific community, which is a connection of several scientists, the results need to be confirmed by performing the same tests or experiment.
Note that, an experiment becomes a scientific theory if it has undergone series of repeatable tests. One of the key features of scientific experiment is that it must be repeatable.
Small-chain fatty acids can enter the bloodstream directly, but large-chain fatty acids must be packaged first before entering the . can be carbohydrate-, protein-, or fat-based. remove cholesterol from tissues and deliver it to the liver for use in bile or excretion. Linoleic acid and alpha-linolenic acid are considered , and must be obtained from the diet. is needed to help mix fats with watery fluids. Carriers that transport monoglycerides and fatty acids to intestinal cells are called . contains 6 to 8 fatty acids connected to sucrose, and cannot be broken down by digestive enzymes. A is a lipoprotein carrier that transports digested fat and other lipids through the lymph system.
Answer:
lymph
fat substitutes
high-density lipoproteins
essential fatty acids
emulsification (bile)
micelles
olestra
chylomicron
Explanation:
Short-chain fatty acids can be absorbed directly into the bloodstream by the intestine capillaries, while long-chain fatty acids are released into the tiny intestine. Fat substitutes are chemical compounds that have similar properties of fats and oils, with fewer calories than fat. High-density lipoproteins (HDL) are referred as "good" cholesterol because they transport cholesterol from other body parts back to the liver. The alpha-linolenic acid and linoleic acid correspond to omega-3 and omega-6 fatty acids, respectively, and they are essential fatty acids that need to be consumed in the human diet. Emulsification is a chemical process consisting of mixing two immiscible liquids to form a semistable mixture. Micelles are chemical structures formed by the agglomeration of mixed lipids and bile acids, which support the action of lipases for digesting lipids. Olestra is a fat substitute that can be used in low-calorie diets for weight control. Finally, chylomicrons are ultra low-density lipoproteins (ULDLs) composed of triglycerides, phospholipids, cholesterol and proteins. The ULDLs are produced by intestinal cells.
Climate is a global factor that produces
A. Earth’s unique ocean and atmosphere.
B. the shape and elevation of landmasses.
C. a wide range of environmental conditions that shape communities.
D. solar energy within the atmosphere.
Answer:
C. a wide range of enviromental conditions that shape communitites
Explanation:
Climate is a global factor that produces a wide range of environmental conditions that shape communities. Option C.
Climate as a global factorClimate is a global factor that generates a wide range of environmental conditions, including temperature, precipitation patterns, humidity, wind patterns, and seasonal variations.
These environmental conditions play a crucial role in shaping the structure and dynamics of ecosystems and the distribution of organisms. Climate influences factors such as the types of vegetation, availability of water resources, and the adaptability and survival of various species.
It affects the composition and characteristics of communities and ecosystems, making it a key factor in ecological processes and biodiversity.
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After spending a year in India, Giovanna returns home to the United States and is inspired to raise money to help her new friends build a school. She makes a pitch to the Rotary Club in her hometown. This was the best experience of my life. Not only did I get to learn about a new culture and explore new ideas, but I am learning to speak their language. But don’t just take my word for it. I’ve asked the children to join us today from India through web-conferencing, and they’d like to say a few words.
Answer:
A. improve the conditions of people in other countries.
Answer:
A
Explanation:
took the quiz
