Keystone species ; this is a species whose presence is critical to the composition and integrity of the community
The answer is; D
A limiting factor is a resource in the environment that significantly affects the growth, distribution or abundance of an organism or population within an ecosystem. When this factor is controlled it can result in increased or decreased growth.
In this water, the level of the water table in the desert limits the growth of the cacti plants.
Answer:
1) Gene expression can be modified by Interactions with the environment
Explanation:
Environment factors such as temperature change for instance affects the expression of the genes for a particular trait and these genes can be modified too.
