Thermal energy could be an answer
Answer: They do this to obtain the vital nitrogen that they need to grow.
Explanation:
The fact that species are becoming immune through natural selection being passed down generations
D.lets things enter or exit the cell
Answer:
Option A, keystone species
Explanation:
Keystone species are responsible for controlling any species from becoming dominant over all other species. The keystone species are found at the top of all the energy pyramids and food chains.
They control the explosion of population of prey and hence regulate the overall ecological diversity.
Some common example of keystone species is as follows –
Bison, prairie dog, large mammalian predators,
Hence, option A is correct
