2)
explain why there are a large number of marsupial mammal species in australia and south america, two continents that were once connected.
a) ozone production
b) continental drift
c) the fifth mass extinction
eliminate
d) the first mass extinction

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.