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lozanna [386]
2 years ago
5

Which of the following is not an example of mechanical control of nonnative species?

Biology
2 answers:
alexdok [17]2 years ago
8 0

<u>pulling </u>is not an example of mechanical control of nonnative species

olasank [31]2 years ago
3 0

Answer:

The answer is A.

Explanation:

Quizlet said so.

Have a nice day :)

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Peppered moths are dark-colored when they carry the dark (D) allele, and light-colored when they are homozygous for the recessiv
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Answer:

A D=0.20; d = 0.80

Explanation:

im pretty sure just look it up. she has the same answer but a explination.

credit-

Diatonic254

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In 1985 a biologist counted 750 pine trees in a 250 hectare forest. Using similar counting techniques, the biologist counted 1,2
Alisiya [41]

Answer:

Suppose that we have a given function f(x)

The average rate of change of the function between two values x₁ and x₂ is given by:

r = \frac{f(x_2) - f(x_1)}{x_2 - x_1}

a) We want to find the average (rate) of change on the size of population from 1985 to 1995.

We have that:

f(1985) = 750

f(1995) = 1500

Then we have:

r = \frac{1500 - 750}{1995 - 1985}  = 750/10 = 75

This means that the population of trees increases, in average, at a rate of 75 trees per year.

b) What is the density of trees each year that they were counted?

This will be equal to the quotient between the number of trees and the area.

1985: number of trees = 750 pines

         area = 250 ha

Then the density is:

D(1985) = (750 pines)/(250 ha) = 3 pines/ha

So 1985, there were 3 pines per hectare.

1990: number of trees = 1250 pines

         area = 250 ha

Then the density is:

D(1990) = (1250 pines)/(250 ha) = 5 pines/ha

1995: number of trees = 1500 pines

         area = 250 ha

The density is:

D(1995) = (1500 pines)/(250 ha) = 6 pines/ha

3) now we want to get the average change between 1985 and 1995 in the density, this will be:

r = \frac{D(1995) - D(1885)}{1995 - 1985}  = \frac{6 pines/ha - 3pines/ha}{10}  = 0.3 pines/ha

So, on average, each year the number of pines per hectare increases by 0.3

7 0
3 years ago
HOW DO I FIND THE PERCeNT
Tpy6a [65]

Answer:

50% will have ears

Explanation:

To have ears you must have the trait nn since the ears trait is recessive,  2 of the four possible offspring are like this, so 50%

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3 years ago
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Describe the behavior of brown bats
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What is the role of cellular respiration in energy flow?
Thepotemich [5.8K]

Answer:

takes substances captured from the external environment (air and carbon sources) and converts them into energy for building more cells and tissues and for carrying out life-sustaining activities. It also generates waste products and water.

Explanation:

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