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3 years ago

What is your favorite pet and why?

1 answer:

7 0

Answer: my favorite pet is the capybara because there so cute but u cant have them as a pet i beive the only pet u can have on that list would be a frog . the capybara is a intersting animal u dont have to pick up there poop cause they eat it for like this thing called bacterial gut flora and it helssps them digest the cellulose in the grass

Explanation:

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Why are lichen and moss called soil farmers

stich3 [128]

Answer:

When lichens and misses died off, they are usually replaced by bigger plants because they have made the place suitable for the growth of larger plants. The dead parts of lichen and misses decompose and turn into small particles of soil, this allow other plant species to grow in this location.

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3 years ago

A tree grows and increases its mass explain why it is not a violation of the law of conservation of mass

gregori [183]

A tree is not an isolated system. It gets nutrients from surrounding environment to grow and build its mass. A total mass of tree plus its environment is constant.

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3 years ago

Why is the life span of this finch with an eye disease most likely reduced?

g100num [7]

Answer:

The disease could affect the eyesight of the finch or blind the finch thus causing it harder to find food and/or see predators. Some eye diseases are deadly for finches as well.

Explanation:

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3 years ago

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

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3 years ago

What is the speed of light in a vacuum?

KonstantinChe [14]

Correct answer is approximately 300000 km/s

8 0

3 years ago

Read 2 more answers