How does a catalyst influence a chemical reaction? o It speeds up or slows down a chemical reaction by direct participation.
O It reacts with products to increase the concentration of reactants.
O It decreases the amount of energy necessary for the reaction to proceed.
It increases the total amount of products formed.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

I’m stuck on this question cuz i’m stupid sksksksk

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.