view each ecosystem at your table. Think about the resources that are necessary in order for each to be successful. List all of the resources you can think of that organisms will compete in each ecosystem

Organisms compete for the resources they need to which are survive- air, water, food, and space.

these are the basic components:

Some consumers are predators; they hunt, catch, kill, and eat other animals, the prey. The prey animal tries to avoid being eaten by hiding, fleeing, or defending itself using various adaptations and strategies. These could be the camouflage of an octopus or a fawn, the fast speed of a jackrabbit or impala, or the sting of a bee or spines of a sea urchin. If the prey is not successful, it becomes a meal and energy source for the predator.

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

i'm assuming that the correct answer is indeed the first one/ "a"..