Answer is: b<span>ottleneck effect.
</span>Bottleneck<span> effect is a intense reduction in the size of a </span>population due to environmental events. Tornado<span> reduce the variation in the </span>gene pool of a population, so genetic diversity remains lower and population r<span>educe its ability to adapt.</span>
<span>Embryo means "an unborn or unhatched offspring in the process of development, in particular a human offspring during the period from approximately the second to the eighth week after fertilization (after which it is usually termed a fetus)."</span>
A possible explanation of a scientific question based on observation
Answer:
It was easy to plant and grew rapidly.
Explanation: