Which word best describes the nature of predator-prey dynamics in stable communities?

Cyclic

Explanation:

It is cyclic because as the number of predators increase in the ecosystem, the number of preys decreases with time. This decrease in preys means lesser food resources for the predators which then decreases the population of the preys. As the predators decrease the number of preys starts to recover and increase in population.

The cycle goes on and on which makes it a cyclic relationship in the nature of predator-prey dynamics in stable communities

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.