Less stomata because stomata is the pathway through which water transpires. A cactus' habitat is much drier than normal tropical plants, therefore it would require less transpiration to survive. In order to lessen transpiration, they have less stomata.
The continents that are now separated by the Atlantic Ocean once formed a single landmass.
All of our current continents were once connected as one single landmass named Pangea. Pangea broke apart into different continents. Fossils found in Africa have been found in South America, and etc.
Answer:
Competition will occur between organisms in an ecosystem when their niches overlap, they both try to use the same resource and the resource is in short supply. Animals compete for food, water and space to live. Plants compete for light, water, minerals and root space.
