Hey there!!
The answer to your question:
The niche of an organism is the functional role that it plays within an ecosystem.
The Correct choice is C
The difference in concentration of materials across a space is called the <u>Concentration</u><u> </u><u>gradient</u> .
Answer:
Option A, Key stone
Explanation:
A keystone species plays a major role in an ecosystem as it is the species whose presence effects all other species in the ecosystem .In general a keystone species is always a dominant predator that feed on prey population. If it is removed, the prey population will explode and the population diversity will reduce. For example - bison, prairie dog etc.
Hence, option A is correct
Its advantage it that original offspring is original not fake but usually idectail of spring is fake.
I belive fake offspring can not reproduse