Which of the following is the most direct evidence for evolution?
A. Biogeography.
B. Anatomy.
C. Developmental biology.
D. Fossil record.
Answer:
D. Fossil record.
Explanation:
The fossil record evidences the evolutionary history of life on Earth by tracing the life forms that existed from earlier geological times and remained in the sedimentary rock. Different fossils were dated in the sedimentary rocks of all geological periods. The simplest forms of life were discovered in the oldest rocks, while more complex fossil organisms were found in the newest rocks. In consequence, the fossil record can support the evolutionary process as proposed by Charles Darwin, who indicated that the simplest forms of life evolved in more complex organisms.
Which of the following is the
function of the nucleus?
A. Assembled ribosomes
B. Allows materials in and out
C. Directs protein synthesis
D. Contains water and other nutrients
Answer:
you answer is b
Explanation:
your welcome :)
PLSS HELP Will Mark brainiest
.Why do phospholipids form a bilayer in the cell membrane?
Answer:
because the properties of polar heads and nonpolar tails cause the phospholipids to arrange themselves in layers.
Explanation:
BECAUSE I HAVE BIOLOGY AND 100% IT MADE ME XPLAIN NOT TRYING TO BRAG XOXOXOX
Answer:
The phosphate portions attract water, and the lipid portions repel water.
Explanation:
Phospholipids form layers because the properties of polar heads and nonpolar tails cause the phospholipids to arrange themselves in layers.
Which Atom is a carbon atom?
A
B
C
(look at picture)
The second structure shows the structure of carbon atom because atomic number of carbon is 6. Therefore, option B is correct.
What is carbon atom ?The carbon is an element denoted by symbol "C". The atomic number of carbon is 6. It belongs to the 14th period in the periodic table. Carbon is a nonmetal and the shape of carbon is tetravalent, so it has 4 electrons in the valence shell.
Carbon atom available in many forms, including carbon dioxide, coal, a cow, sugar and diamond. Carbon forms covalent bonds with atoms of carbon or other elements because it has 4 electrons in the valence shell.
In the second structure we see that there are four electrons are preset in valence shell ad the total number of electron present is six. Therefore, the second structure shows the carbon atom.
Thus, option B is correct.
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Can you help me with the 5 questions listed in the pictures below? Please and thank you. Will mark BRAINLIEST!!! :)
Answer:
Explanation:
1. The crisis the people in cape town were facing was a major drought that affected animals, plants, and people.
2. The crisis was caused by 3 years of barely any rainfall and the people using the same amount of water they had been using for a while. Naturally, things caught up and the people were using to much water without enough to supply.
3. The government and local authorities started setting laws to restrict water usage. So businesses and citizens had to restrict water usage very quickly. At one point they said they would run out of water completely, that made reality set in for people. People started setting out separate buckets and jars to collect water for drinking, bathing, and watering their plants for food. Everyone stopped using their baths.
People removed eucalyptus trees so water would start running down the dams.
Businesses had to manage the water even more carefully, they had to make sure that how much water they were using was under the limit but still accommodating either the plants or the people or the animals.
4. The crisis was ultimately resolved when the rain came again and people kept their same restrictions for a little bit to catch up and then they started getting more water gradually but still making sure they weren't using too much.
5. Now that the crisis is over, I think it will have have a lasting impact on the people of Cape Town. I think mentally it made them more aware of what could happen and made them more precarious. I think if there was less rainfall for a bit again they would start going into preparation mode, but this time, know more about how to reverse it and live with it. Like in the video, it showed the hotels, people, and businesses have started monitoring the water usage again and installing things to catch extra water and making sure there is a backup water containers to avoid this in the future. I also think because of all the restrictions it will affect the land for quite a while, you can't just replant trees and vegetables, and regrow all the foods businesses produced with a snap of a finger, it takes time, seasons, months, so consequently as the land is affected so are the people.
I think the crisis affected the people's mindset by changing their outlook on water and showed them how to be more frugal with water.
(you can change this up and put it in your own words if you want, idk, I hope this is good enough :) )
Which of these molecules might be found in a molecule that catalyzes a chemical
reaction?
(B.9A, B.90)
DNA, a nucleic acid
lard, a fat
valine, an amino acid
glucose, a sugar
Answer:
a
Explanation:
because
Answer:
Valine, an Amino Acid
Explanation:
What are three areas that you could study to
learn about the inside of cells?
An amoeba is a single-celled organism that feeds on algae, plant cells, and bacteria. When an amoeba feeds, it first makes contact with the food particle. Next, the amoeba starts to surround the particle. Once the particle is completely engulfed, it is surrounded by a layer of the amoeba's membrane, forming a vesicle. the pH in the vesicle is then lowered and the contents are degraded. What type of transport is involved in this process?
A. diffusion
B. endocytosis
C. exocytosis
D. passive transport
Answer:
yall passive transport is wrong, on plato or grad point the answer is endocytosis
Explanation:
thank me later :)
I literally don’t know the answer to this Someone plz help
Answer:
Abiotic conditions would be the temperature of the reef, and also the amount of light that the living organisms receive. (aka coral and zooxanthealle algae)
Biotic would be coral, and also fish. A disturbance in the balance of an abiotic of biotic factor could in turn kill one of the many organisms needed to keep each other alive in symbiosis within the coral reef. In a domino effect, if one organism that is essential to the balance dies, then another, and so on until the coral reef itself dies.
water shows (blank) bonding where electrons are shared (blank). This makes water very special and important to life
Answer: water shows ionic bonding where electrons are shared atoms
Hope this helps
Plz mark brainleist
despite being very different of diets that include different types of food containing different levels of biomolecules, these diets are all able to support human being in living. How is this possible?
Answer:
As nutrients, protein is overemphasized and carbohydrates are underrated in terms of their importance in our diets. Most people in the United States now eat more protein than their bodies need, and, somehow, carbohydrate-rich foods such as potatoes and bread have gotten a bad name for being fattening. Yet protein from animal sources often comes in foods that contain significant amounts of saturated fatty acids. And the only carbohydrate-rich foods that are truly fattening are those laden with fats and added sugar, such as pastries, cookies, and baked potatoes heaped with sour cream.
In fact, there is some evidence that diets high in carbohydrates may help reduce the risk of heart disease. Thus the Eat for Life guidelines suggest not to eat any more protein than you already do and to increase the amount of carbohydrates you eat to compensate for the lower amount of fat that your diet will contain.
This chapter presents the evidence that increasing the proportion of carbohydrates in the usual American eating pattern at the expense of fat will tend to lower chronic disease risk. It also discusses some of the health claims made for dietary fiber, a group of substances that are made up mostly of complex carbohydrates.
Describe how a vein of silver forms from a solution.
During which moon phase do spring tides occur?
O new moon and full moon
O first quarter and third quarter
O waxing gibbous and waning gibbous
O waxing crescent and waning crescent
I’m in science
Explanation:
new moon and full moon phase
Answer:
New moon and full moon, about every 14 days.
Explanation:
Which level of organization is characterized by a group of cells that work together to perform a common function? i need help with this question
Organization in organisms is like this:
cells => tissues => organs => organ systems => organisms
Since we are talking about a group of cells, this would be a tissue. Don't let the word 'function' confuse you. Tissues do functions as well as an entire organ or organ system.
It is helpful to use the flow chart when asked questions like these, so make sure to memorize it! It will be helpful in any level of science.
I hope this helps!
Answer:
B) tissue
Explanation:
edge 2020
The main difference between a heterotroph and an autotroph is that Select one: An autotroph makes its own energy and a heterotroph gets its energy from eating other organisms. An autotroph eats food find it finds itself, whereas a heterotroph eats food found by other organisms. A heterotroph eats food it finds itself, whereas an autotroph eats food found by other organisms. A heterotroph makes its own energy and an autotroph gets its energy from eating other organisms.
Answer:
An autotroph makes its own energy and a heterotroph gets its energy from eating other organisms.
Explanation:
Autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose. Glucose is a type of sugar. The glucose gives plants energy. Heterotrophs cannot make their own food so they must eat or absorb.
Which statements best describe science? Check all that apply.
Science involves observation and experimentation.
Science is characterized by resistance to new information.
Science is supported by facts and processes.
Science involves the use of beliefs and opinions to construct explanations.
Science continually changes and is constantly updated.
Answer:
science is supported by facts and processes
Science involves observation and experimentation
Science continually changes and is constantly updated
Explanation:
Answer:
1,3,5
Explanation:
Can you help me with the question listed in the pictures below? Please and thank you. Will mark BRAINLIEST!!! :)
Please help me answer this question I REALLY WANT TO SLEEP!!!
Answer:
C is the correction answerrr
Answer:
you want to sleeep
Explanation:
nenenenene
what is DNA coding ( will give Brainliest)
What are the three main types of tectonic plate boundaries?
a. convergent, divergent, and transform
b. continental, oceanic, and convergent
c. oceanic, convergent, and divergent
d. transform, continental, and divergent
Please select the best answer from the choices provided
A
B
С
D
Answer:A
Explanation:
The three main types of tectonic plate boundaries are convergent, divergent, and transform. The correct option is a.
What are tectonic plate boundaries?Tectonic plate boundaries are the different types of boundaries, that show how the tectonic plates are connected to each other. There are three types, convergent, divergent, and transform.
The three types are:
Convergent boundaries- when two plates are colliding.Divergent boundaries- when two plates are moving apart.Transform boundaries- when plates slide past each other.Thus, option a. is correct regarding the tectonic plate.
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Please help me anything helps.
Answer:
B ( or D but I'd say B )
Explanation:
I may so think its B because If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction. Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common.
( So I hoped this helped! :D )
what organelle is in lipids
Answer: Endoplasmic reticulum
Hoped I helped-
Sleepy~
How do the basic
characteristics of
viruses, bacteria,
fungi, and parasites
relate to the spread,
treatment, and
prevention of disease?
What biomolecule determines whether an individual inherits the inability to produce the enzyme needed to break down the amino acids
Answer:
NUCLEIC ACIDS
Explanation:
Four biomolecules are found in living systems and they are responsible for every process undergone by cells of living organisms. Nucleic acid is one of the four biomolecules, which is the precursor of another biomolecule called PROTEIN.
DNA and RNA are the two nucleic acids which contains segments called GENES that encodes the information needed for the synthesis of proteins and transfer of this information to offsprings. Genes found on nucleic acid biomolecules undergo expression to produce proteins. ENZYMES are proteinous molecules that catalyse biochemical reactions in living systems.
From the explanation above, this means that ENZYMES that catalyze reactions like breaking down amino acids are PROTEINS, which in turn are made from GENES carried by NUCLEIC ACID biomolecules.
Therefore, NUCLEIC ACIDS determine whether an individual inherits the inability to produce the enzyme needed to break down the amino acids
Which macromolecule is the body's first source of energy and is made up of our top 3 elements?
Answer:
There are four classes of macromolecules (polysaccharides or carbohydrates, triglycerides or lipids, polypeptides or proteins, and nucleic acids such as DNA & RNA). Carbohydrates and lipids are made of only carbon, hydrogen, and oxygen (CHO). Proteins are made of carbon, hydrogen, oxygen, and nitrogen
2. If a cell has a very large amount of ribosomes attached to its rough
endoplasmic reticulum, what is the cell probably specialized to manufacture?
Answer:
Protein
Explanation
Ribosome and Rough E.R are organelles in the cell.
E.R are extensive membranes (which are continuous with the nuclear membrane) that exist as flattened compartment in the cytoplasm.These compartment form sacs in the cytoplasm. The sacs are interconnected with one another to form a complete system called the reticulum.
Based on structure two types of E.R exists -the Smooth E.R and the Rough Endoplasmic reticulum.The later is called rough because of Ribosomes attached to its outer membrane. the smooth lacks ribosomes attachment on its outer membrane. Ribosomes are the site of Protein synthesis in the cell.
They are small in number and are made up of RNA and protein.Generally the protein synthesised in the Ribosomes,are moved into the sacs in the R.E.R,where they are modified.They are eventually budded off in vesicles which form the Golgi bodies
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When a plant starts to wilt, it's often due to a lack of water, which makes its cells flaccid, or limp. When a plant looks healthy, it's often due to proper watering, making its cells turgid, or upright.
What cell structure is most likely responsible for whether or not a plant cell is flaccid or turgid?
Choose 1 answer:
(Choice A)
A
Vacuole
(Choice B)
B
Lysosome
(Choice C)
C
Mitochondria
(Choice D)
D
Chloroplast
Answer:
The answer is a
Vacuole is most likely responsible for whether or not a plant cell is flaccid or turgid. So, the correct option is (A).
What is Plant cell?Plant cell is the basic unit of all plants. Plant cells are eukaryotic in nature. They have a membrane-bound nucleus and organelles. Plant cells have a cell wall surrounding the cell membrane.
The cell wall has many functions on which the life of the plant depends. Plant cell walls are composed of cellulose, which distinguishes them from other organisms with cell walls, such as bacteria (peptidoglycan) and fungi (chitin). Algal cell walls are similar to those of plants, and many contain specific polysaccharides that are useful for classification.
Examples of plant cells include different specialized cells like parenchyma, sclerenchyma and collenchyma cells.
Thus, Vacuole is most likely responsible for whether or not a plant cell is flaccid or turgid. So, the correct option is (A).
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what should Susan say to the customer about the delivery date for the item
Which of the following is an example of a cultural ecosystem service?
a
Lumber is used for building homes
b
Medicines derived from plants in the rainforest
c
Touring the Grand Canyon
d
Water is purified by vegetation and soil
Answer:
b
Explanation:
Cultural ecosystem services include the use of lumber wood in the construction of buildings and homes. Thus, the correct option is A.
What are Ecosystem services?Ecosystem services are the many benefits which are provided by the natural environment and from healthy ecosystems to the humans. Such ecosystems include, agroecosystems, forest ecosystem, grassland ecosystems, and aquatic ecosystems.
The non-material benefits which people obtain from the ecosystems are called as the cultural services of ecosystem. These include aesthetic inspirations, cultural identity, building of home, and spiritual experience related to the nature. The opportunities for the tourism and for recreation of ecosystem are also considered within this group of ecosystem services.
Therefore, the correct option is A.
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GIVING BRAINLIEST do crocodiles go in salt water
Answer:
Yes, Crocdiles are found in both salt and fresh water
Explanation:
Answer:
Yes
Explanation:
