Question

give reasons:
(a) It rains frequently in the forest areas.

(b) A plant wilts when uprooted from the soil.

(c) Active transport is opposite of diffusion.

(d) Acid rain has harmful effects.

(e) Weeds can be killed by sprinkling salt at their bases.​

Answer 1

Answer:

(a) Rainforests, like all forms of vegetation, affect the "surface albedo" or reflectivity of a surface by absorbing more heat than bare soil. In turn, this warm carries moisture from forest trees into to atmosphere, where it condenses as rain. In other words, tropical forests cool local climate and help generate rainfall.

(b) Roots of the plant have whole sole responsibility to absorb water and minerals and when plants are uprooted absorption of water stops due to which leaves lacks water that's why leaves wilt.

(c) During active transport, molecules move from an area of low concentration to an area of high concentration. This is the opposite of diffusion, and these molecules are said to flow against their concentration gradient. Active transport is called "active" because this type of transport requires energy to move molecules.

(d) Acid rain can be extremely harmful to forests. Acid rain that seeps into the ground can dissolve nutrients, such as magnesium and calcium, that trees need to be healthy. Acid rain also causes aluminum to be released into the soil, which makes it difficult for trees to take up water.

(e) weed is killed by sprinkling salt in the soil on which they grow by the phenomena of exosmosis. Explanation: Osmosis is the movement of water from the region of lower concentration of solute to the region of higher concentration of solute.

Explanation:

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