Where can you find most of Earth's freshwater?

Biology

1 answer:

frosja888 [35]3 years ago

7 0

Answer:

underground

Explanation:

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Please help me!! Describe the effect of surface area and pores on cells.

ivanzaharov [21]

Explanation:

Surface area and pores play important roles in the cell.

Pores are the tiny holes on the surfaces of a body. They help to facilitate movement of materials in and out of the cell.

The surface area is the amount of space the surface of a cell occupies.

Pores in a cell needs to be in proper shape in order to facilitate movement of materials.
When the pores in a cell are too large, too much materials are bound to leave the cell. Tiny pores makes it difficult for the cells to have enough materials to function properly well.
The surface area of a cell allows for the diffusion of materials in and out of cell.
The larger the surface area of a cell, the more and better reactions takes place because they will receive important life sustaining resources.

Learn more:

Surface area to volume ratio brainly.com/question/9666705

#learnwithBrainly

5 0

3 years ago

1. 1 Water makes up between 70-90% of the weight of most life forms, and nearly all chemicals present in living matter are solub

boyakko [2]

Answer:

The correct model is D.

Note: The first attachment below shows the different models. The second attachment shows the correct structural model of the water molecule.

Explanation:

A water molecule is composed of one atom of oxygen and two atoms of hydrogen.

A water molecule is polar, i.e. it contains positively and negatively opposite ends. The polar nature of the water molecule is due to strong electronegativity of oxygen which results in an uneven sharing of the bonding electrons between oxygen and hydrogen. The oxygen atom attracts the shared electrons more to itself, thereby, it acquires a partial negative charge, while the hydrogen atoms acquire a partial positive charge.

The bond angle between the oxygen and hydrogen atoms is approximately 105°. Therefore, from the first attachment below, the correct model for the water molecule is D.