Plants in the desert tend to have small, hard leaves that are coated to prevent water loss. plants in the rainforest tend to have large leaves with pointed tips that slope down to promote water runoff.

how have these leaf adaptations these plants to survive in their environment?
a.
the small leaves the desert plants remain cool during hot summer days.
b.
the small leaves make it easier for the plant to survive in windy desert climates.
c.
the large leaves provide shade for plants in sunny areas.
d.
the leaves plants in dry places retain water and plants in wet areas repel water.

D). The leaves help plants in dry places retain water and plants in wet areas repel water.

Explanation:

It is the only answer that applies to both previously stated facts, rather than your other options which only pertain to one native plant or the other. You do not need prior knowledge to answer this question, just utilize process of elimination. Furthermore, D). is the only option which makes sense in the context provided.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

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