Answer:
This is the famous extinction event that brought the age of the dinosaurs to an end. In each of these cases, the mass extinction created niches or openings in the Earth's ecosystems. Those niches allowed for new groups of organisms to thrive and diversify, which produced a range of new species.
Explanation:
Similarly to the siblings which inherit some traits from mother or father, in the process of evolution, two organisms can have some similar traits because they inherited them from a common ancestor. Similarities seen among related organisms suggest that they have a common ancestor.
Muscle tissues signaling muscle tissues to contract.
Answer:
a negatively charged particle is an electron
