If it killed the top level of an ecosystem it would damage the whole ecosystem because it's connected. An organism depends on that top organism which would mean that is that organism dies it would affect the organism that depends on it.
The resulting two cells will have an identical genetic composition.
The two different organism reproduction is asexual which means that they can reproduce by them selves because they have both male and female parts. Sexual is when it takes two species of the opposite genders to have a offspring.
<span>Only one plant is involved and the offspring is the result of one parent. The new plant is genetically identical to the parent this is counted as reproductive. </span>
The environment is your correct answer<span />