Can anyone plzzz help me ! Which of these responses is a result of a seasonal change, which happens
over and over at a certain time of year?

O A. Plankton dying due to an oil spill
O B. Fish moving away from polluted water
C. Frogs digging into mud to hibernate
D. Grass becoming sparse due to overgrazing

c

Explanation:

because frogs hibernate at a same time every year

sexual reproduction produces offspring with novel combinations of genes. species that reproduce sexually must maintain two different types of individuals, males and females, which can limit the ability to colonize new habitats as both sexes must be present.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.