Be careful with commonly confused words
Temperature affects the reaction.
Temperature has an effect on the reaction.
Less food (the use of less is appropriate since we can't count food)
Fewer animals (can count how many animals are there)
Fewer animals (can count how many animals are there)
A large amount of food (can't count numbers of
food)
A large number of animals (can count numbers of animals)
A large number of animals (can count numbers of animals)
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