What categories of living things are on land?

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

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

Why are current extinctions of concern to enviromentalists?