The amount of lactic acid increases from 20 au to 80 au across the duration of the exercise period. Work out the percentage change in lactic acid during this time.

Abiologist counts the number of rabbits in a population each year and observes a decrease in population. since the coyote population has exploded, the biologist concludes that the coyote population has had a negative interaction with the rabbit population. which describes the biologist’s actions? a.) experimentationb.) inferencec.) observationd.) interacting