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3 years ago

Please can anyone help me out in this whole definition actually I can't understand it

Biology

1 answer:

FrozenT [24]3 years ago

6 0

Answer: Capillaries are tiny branched blood vessels that joins the arteries to the veins

Explanation:

Capillaries are found in the junctions between arteries and veins in the tissues.

They have the following functions:

- They have tiny walls and are tiny enough to penetrate to all parts of the body

- The thin walls help them diffuse oxygen, nutrients and waste products between cells and the blood.

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In order to be classified as a green plant, an organism should be eukaryotic, have double-membraned chloroplasts, cell walls, an

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3 years ago

Read 2 more answers

When amylase break down starch what sugars are produced??

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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 outermost layer of the wall of the heart called

Aloiza [94]

The wall of the heart consists of three layers: the epicardium (external layer), the myocardium (middle layer) and the endocardium (inner layer). The epicardium is the thin, transparent outer layer of the wall and is composed of delicate connective tissue.

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3 years ago

Please can anyone help me out in this whole definition actually I can't understand it ​

Please can anyone help me out in this whole definition actually I can't understand it