Answer: molecule transport and energy use
Explanation: I got the answer from castle learning
If want a direct answer it would be the decrease in mice, but if you want to get technical the decrease in grain spills caused mice to leave so that would be the indirect cause
The pupils will constrict (or get smaller) to let less light in.
It acts as biological catalysts, which can speed up the chemical reactions, it can fit substrates into its active site and produce a product, but the enzyme shape is not changed and it can be reused. just unless the enzyme meets high temperature or extreme pH values, which will denature them