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Irina18 [472]
3 years ago
10

What does a scientist need to know to figure out the relative age of a rock layer?

Biology
2 answers:
alexdok [17]3 years ago
6 0

The rate of decay C

To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.

mote1985 [20]3 years ago
6 0

Answer:

A is the answer, this is because deposition has been happening on earth for ages so as time goes by more deposits form layers on earth, including the remains of animals and plants that would later become<u> </u><u>fossils.</u>

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Using the diagram that explain how proteins are formed, check ALL the statements that are true about the structure of proteins.
Snowcat [4.5K]

Answer/Explanation:

If a protein has a quaternary structure it is formed when many subunits get together. - true. The quaternary structure of a protein is the final stage in its assembly, when structures from multiple polypeptides come together, forming a multi-subunit protein (e.g. a dimer if 2, a trimer if 3 and so on)

Monomers form the secondary structure of proteins. - false, they form the tertiary structure

The charges on the functions groups of the amino acids creates the beta pleated sheets and alpha helix structures that are the secondary level of structure in proteins. - false, it is mostly the peptide backbone that causes the alpha helices and beta sheets to form

The order of the amino acids is the primary structure of proteins.  - true. The amino acid sequence linked together by peptide bonds is the polypeptide sequence, which then forms increasingly complex structures when folded.

The tertiary structure of proteins is formed when the B sheets and alpha helices organize themselves into a more complex shape. - true. These complex structures can further interact with one another to form increasingly organized domains. The amino acid side chains possess different properties that form different bonds with one another.

The primary structure of proteins is formed from the amino groups on the proteins.  - false, the primary structure is formed by the sequence of amino acids in the chain, determined by the mRNA sequence from which the protein is synthesised.

3 0
3 years ago
The water in the bottom of this bottle best represents -
maw [93]

Answer:

Option A, accumulation

Explanation:

As we can see in the image,  the water gets heated and convert its pahse from liquid to gas i.e from liquid water to water vapor.  As it rises above, it condenses and converts from water vapor into liquid water. The liquid water then moves in the downward direction and collects at the base. This process of collection at base can be related to accumulation of running water.

Option A is correct

8 0
3 years ago
Where is glucose stored in the body.​
asambeis [7]

Explanation:

Glucose is stored in the liver.

5 0
3 years ago
since the nucleus of an atom is so far away from the electron shells around it, an atom is made mostly of which of the following
Marianna [84]
The atom is made of three subatomic particles.
protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.
5 0
3 years ago
When a volcano erupts, tiny particles from which of Earth’s spheres are released into the air?
d1i1m1o1n [39]

Answer: C. Geosphere

brainliest?

3 0
3 years ago
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