7. The use by humans of one species to limit the population growth of another species is termed: (a) natural selection (b) biological control (c) cross-breeding (d) species interaction 8. An aquarium tank in a school laboratory contained mosquito larvae, algae, water snails, tilapia, pond weed, protozoa and water lily.
Which of the organisms in this aquarium form the producer population? (a) Algae, protozoa and pond weed. (b) Waterlily, pond weed and algae. (c) Mosquito larvae, water lily and tilapia. (d) Water snails, algae and protozoa
9. Which of the following natural resources is not renewable? (a) Fish (b) Water (c) Minerals (d) Trees

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.

i think this picture will you.

huh

explanation: