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NISA [10]
3 years ago
5

A geologist is studying an ancient stack of rock layers. Most of the layers contain fossils of shallow marine creatures (clams,

corals,
etc.), suggesting the layers formed in a shallow ocean environment. But at the top of the stack, there is a layer that could only have
been deposited by a river.
What does this change in rock layers tell the geologist about Earth's history in the area where these layers formed? (Assume the
layers have not changed position since they formed.)
A.
The environment changed suddenly from a river system to a shallow ocean setting.
B.
The environment changed suddenly from a shallow ocean setting to a river system,
A mass extinction caused a river system to form where there used to be a shallow ocean setting.
C.
D.
A volcanic eruption must have occurred nearby, which scared the sea creatures away.
Biology
1 answer:
Lyrx [107]3 years ago
7 0

Answer:

a volcanic eruption must have occurred nearby which scared the sea creatures away

Explanation:

most sea creatures are scared by volcanic eruption

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Plants and algae can produce their own food by harnessing solar energy. These organisms are referred to as producers because they generate their own food.

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8 0
1 year ago
What is one example of urban efficiency.
viva [34]

Answer:

the answer is c subway system

Explanation:

8 0
3 years ago
zerem e, imamović g, omerović s: simple renal cysts and arterial hypertension: does their evacuation decrease the blood pressure
AveGali [126]

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When the tube of a nephron starts to enlarge and fill with fluid, kidney cysts develop. While the source of this is unknown, researchers do know that small cysts are not hereditary. Simple kidney cysts are thought to arise as a result of damage to the tubules or microscopic obstructions therein.

<h3>What is Arterial Hypertension ?</h3>

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4 0
1 year ago
What are the possible genotypes of a person with type B blood?
Zanzabum

The right answer is BB or BO

The blood group is inherited through a gene located on chromosome 9. Call it the ABO gene. The ABO gene exists in 3 forms, called alleles. We inherit one of these alleles from each of our parents.


The combination of these two alleles is called genotype. The blood group that results from this combination is the phenotype.


* B and B give the BB genotype, which means at the phenotype level, blood group B.


* B and 0 give the B0 genotype, which means at the phenotype level, blood group B, because B is dominant.

4 0
3 years ago
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