What happens to the population size of each of the pond organisms when the perch population size is decrease? how many of the species in the food web are affected by a population change in a single species?

Many species would be affected by a decrease in perch(a fish). Most of the ponds organisms would populate and eventually out grow their living capacity.

a plastic spoon that has a temperature of 78° f is placed into a bowl of soup that has a temperature of 84° f. which of these correctly describes what will happen?

energy as heat moves from the soup to the spoon.