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zavuch27 [327]
3 years ago
13

A species of fish is unintentionally introduced into a marine ecosystem. The species has a similar diet to an existing fish spec

ies creating competition on for food. According to Darwin's theory of evolution by natural selection, which of the following must occur for the existing species to evolve?
how do I explain the answer: natural variations in phenotype must be present in the existing species population.
Advanced Placement (AP)
1 answer:
mr Goodwill [35]3 years ago
5 0
A speices usaully can only breed with the same species unless it is done in a lab with their DNA and sometimes that doesnt work
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If the price of an apple is $0.50, the marginal utility per dollar spent for the fifth apple is:
lakkis [162]

Complete question :

If the price of an apple is $0.50, the marginal utility per dollar spent for the fifth apple is:

Number of apples ____total utility

2__________________130

3__________________180

4__________________220

5__________________250

6__________________270

7__________________280

Answer:

60

Explanation:

The marginal utility simply refers to the change or extra satisfaction derived with change in consumption.

Hence, the marginal utility of the fifth apple equals :

Difference /change or extra satisfaction derived by consuming one more than 4 apples = (total utility of 5th apple - total utility of 4th apple)

= (250 - 220) = 30

Hence, marginal utility per dollar :

Marginal utility / price per apple

Price per apple = $0.5

Marginal utility of 5th apple = 30

Therefore,

30 / 0.5

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3 years ago
Which list places the layers of the sun in the correct order from outermost to innermost?
miss Akunina [59]

(A) Corona, chromosphere, photosphere

<u>Explanation:</u>

  • Photosphere - it is the Sun’s deepest layer, and the layer visible to human eyes directly from the Earth. It is also called the solar surface

  • Chromosphere - This layer of the Sun is located between 250 miles and 1300 miles above the photosphere. The chromosphere has temperatures around 4000K at the base, and 8000K at the top.

  • Transition Region - This layer is very thin with a size of about 60 miles, and it is present between corona and the chromosphere.

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