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Alex Ar [27]
2 years ago
5

3. Which of these methods uses rock layer and bones to support the

Biology
2 answers:
ikadub [295]2 years ago
8 0

Answer: B.

Explanation: well, I'm just thinking it is?

Luba_88 [7]2 years ago
5 0

Answer:

D fossil record

Explanation:

Depending on what layer of earth the fossil was recorded then they could determine a rough date. Then they would use carbon dating to be more exact.

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Why does mutation happen regularly? *
Elan Coil [88]

Answer:

Explanation:

A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.

7 0
2 years ago
Describe the potential effects when a keystone species is removed from a community.
Vlad [161]

Answer:

Explanation:

A keystone species is the one which plays an important role in maintaining the structure of the ecosystem. On the keystone species many other species of the ecosystem are dependent upon.  

The potential effects associated with the keystone species includes the following:

1. No other species will be capable of filling the same ecological niche. Hence, the dependent organisms will suffer and the ecosystem will change drastically.

2. The ecosystem will be populated by the invasive species which will affects the population of native species.

5 0
3 years ago
The hydrolysis of atp on the na+/ k+ pump results in
Shalnov [3]
I believe it results to a conformation change that moves the Na+ binding site to the inside of the cell. ATP hydrolysis involves the release of chemical energy that has been stored in the high-energy phosphoanhydride bonds in adenosine triphosphate.For example in muscles. The process of moving sodium and potassium ions across the cell membrane is an active transport process involving the hydrolysis of ATP to provide the necessary energy. It involves an enzyme referred to as Na+/K+ ATPase.
4 0
3 years ago
Which descriptions accurately apply to vascular plants? Check all that apply.
ruslelena [56]

Answer:

• Have true roots, stems, and leaves

• May have seeds

• May not have seeds

• Have vascular tissue

Explanation:

Remember that they can be put into two groups ( discussing having and not having seeds )

3 0
3 years ago
Describe the activity of chromosomes in each stage of meiosis 1 and meiosis 2
Solnce55 [7]
Prophase- *Nuclear membrane disappears

( so chromosomes can move around)

Metaphase- Chromosomes line up in the middle of the cell

Anaphase-*Chromosome copies pull apart from each other.

Telophase-<span>*Nuclear division has finished and nuclear membrane reappears</span>

<span> This is the process for Meiosis 1 not for 2 (FYI)</span>

4 0
3 years ago
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