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jeka94
3 years ago
9

Which of the following is a method used to obtain the relative age of a rock or fossil?

Biology
1 answer:
Len [333]3 years ago
8 0

Answer:

B

Explanation:

Radiometric dating uses naturally occurring radioactive elements such as carbon-14 within the rock or fossil to estimate its approximate age. The half-life of the element must also be known. The amount of the radioactive trace element is compared to, in a ratio, with that of the number of the decay product elements. This approximate age can then be relatively compared to those of other rocks or fossils.

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Describe how the relative zebra density changes over time. What characteristics of zebras could explain why zebra densities are
Brilliant_brown [7]

Due to resource partitioning, zebra relative density changes over time and grass height.

<h3>What is resource partitioning?</h3>
  • Resource partitioning is the process by which due to natural selection, competing species use different resources and niches.
  • In the case of African savanna, right after peak rain all the three grazers (zebra, wildebeest, and Thomson’s gazelle) have high density.
  • After rain in one month relative density of zebras is maximum but it becomes nearly zero after three months due to high density of wildebeest and then increases a little after six months.
  • The density of zebras is greatest when the grass is tallest and most abundant because of resource partitioning as zebras get the most out of eating tall grass.
  • Zebras can eat and digest faster taller grasses with many stems.
  • This gives them an advantage over other grazers in terms of nutrition when the grass is tall.

Learn more about resource partitioning here:

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3 0
1 year ago
I GIVE BRAINLIEST <br><br> Both question please.
Doss [256]

Answer:

4. D

5.d

7B

Explanation:

5 0
3 years ago
Why is reproductive isolation required for speciation to occur?
lana [24]
Let's say a geographical barrier separates a species into two different population. Which also cause a reproductive isolation ( the two pupolations cannot interbred)

Throughout the time (lets say a million years), the two populations will undergo a lot of changes in their  respective genomes and eventually will form 2 different species.

If there is no reproductive isolation, the 2 population could interbred with one another and there will be no speciation
4 0
3 years ago
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How does a cell interpret the genetic code 13.2?
rusak2 [61]
Cell interprets a genetic code by reading and interpreting each codon which corresponds to a single amino acid. each three letter "word" in mRNA is a codon. ... Protein synthesis creates proteins from amino acids. DNA replication creates a new DNA molecule from an existing one
3 0
3 years ago
How are lysosomes and vacuoles the same? How are they different?
patriot [66]

Answer:

No, lysosomes and vacuoles are not the same.

lysosomes are membrane bound sacs filled with digestive enzymes.

they digest a by foreign material and the worn out cells

they are known as the (brainly won't let me use the right word) <em><u>k</u></em><em><u>i</u></em><em><u>l</u></em><em><u>l</u></em><em><u>i</u></em><em><u>n</u></em><em><u>g</u></em><em><u> </u></em><em><u>i</u></em><em><u>t</u></em><em><u>s</u></em><em><u>e</u></em><em><u>l</u></em><em><u>f</u></em><em><u> </u></em>bags of the cell.

vacuoles are storage sacs of the cell for solid or liquid contents.

they are very small in animals and large in plant cells.

they provide the cell with turgidity and rigidity.

Explanation:

please give me brainliest.

5 0
3 years ago
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