Answer:
option d is correct. the existence of land bridges between continents.
Explanation:
landland bridge theory which was used to explain why species would end up continents over, such as mammoth travelling to North America, thisthis theory was based on the idea that water eventually Rose to cover these bridges rather than the at having individual plates that moved away from each other.
Skipper flies
Your welcome
Answer:
Shoreline Protection.
Nursery.
Threatened and Endangered Species.
Explanation:
Does that help?????
Cytoplasm maintains the internal pressure in the cell.