4 years ago

Flatworms have no need for circulatory and respiratory systems because

1 answer:

6 0

Flatworms have no need for circulatory and respiratory systems because they are able to actively diffuse oxygen through their skin and their body layout is such that they do not need to transport oxygen in order for it to get to their cells.

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Pick the a.b.c below. a. 8 grass/m2 b. 16 grass/m2 c. 24 grass/m2 d. 32 grass/m2

Nataly [62]

Answer:

16grass/m²

Explanation:

Given parameters:

Number of grasses in quadrat = 4

Area of the square = 0.25m²

Unknown:

Population density = ?

Solution:

Population density is the number of organisms per given area;

Population density = $\frac{number of grasses}{area of quadrat}$

Population density = $\frac{4}{0.25}$ = 16grass/m²

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3 years ago

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melisa1 [442]

Answer:

the answer is D i believe.

Explanation:

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3 years ago

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Answer:

Explanation:

It removes other waste from our body and keeps our blood clean

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3 years ago

What is the answer hurry

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