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Gwar [14]
3 years ago
8

What happened during the Cambrian explosion

Biology
1 answer:
vovangra [49]3 years ago
4 0
The Cambrian period was important because it marked a dramatic burst of evolutionary changes in life on Earth. I<span>t is also the time when most of the major groups of animals first appeared in fossil records.</span>
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On the electromagnetic spectrum,
Mrac [35]
<span>B. less energy than gamma rays but more than ultraviolet

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8 0
3 years ago
Which of the following actions would be most likely to increase the protection of ecological systems in national forests?
insens350 [35]

Answer:

The correct answer is - option 3.

Explanation:

The given options are the question are affects the protection of the ecological system in one or another manner but the mandating the rights of government sale of the logging rights in a national forest must be a proper and fair market value.

This will lead to a decrease in the illegal sale of logging sale which results in maintaining the ecological system in the national forest.

Thus, the correct answer is - option 3.

4 0
3 years ago
Active transport requires energy because it usually involves the movement of
hram777 [196]

Answer:

D

Explanation:

When a substance moves from low to high concentration it is moving against its concentration gradient, which requires more energy.

A. It depends on where it is moving, not the substance

OB. This is describing diffusion

OC. Does not require energy, it is passive transport through a semi-permeable membrane

6 0
3 years ago
Which of the following describes the ability of a single gene to have multiple phenotypic effects?
bija089 [108]

Answer:

A, pleiotropy.

Explanation:

Pleiotropy - genes that have multiple phenotypic effects. Remember that phenotype means a physical characteristic caused by a gene, such as eye color or fur patterns.

Incomplete dominance - when neither allele is dominant and they mix together in the phenotype. A popular example is a red flower crossing with a white flower and resulting in a pink flower.

Epistasis - when two genes contribute to the phenotype, but one gene completely masks another gene. An example would be labrador fur colors.

Multiple alleles - 3 or more alternative forms of a gene, but only 2 alleles can occupy an organism. An example is blood type.

Hope this helps!

4 0
3 years ago
What is the last step of a scientific investigation?
aleksandr82 [10.1K]

Answer:

its c

Explanation:

communicating the result is significant to analyzing data

4 0
2 years ago
Read 2 more answers
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