Ablizzard can form when certain physical factors combine with the presence of moisture in the atmosphere. which two factors combine with moisture to form a blizzard?

cold air and a high pressure system
cold air and a low pressure system
warm air and a high pressure system
warm air and a low pressure system

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