Answer: <em>species diversity
</em>
<em>
</em>
<em>ecosystem diversity
</em>
<em>
</em>
<em>genetic diversity</em>
Answer:
the first wave of extinction may be related to rapid cooling at the end of the Ordovician Period, and the second phase is widely regarded as having been caused by the sea-level fall associated with the glaciation.
A The continents were once joined together
Explanation:
All the continents were once together making a huge one called Pangea.
Answer:
a) epigenetic change.
Explanation:
Epigenetic is referred to changes BESIDES the changes in the genetic changes. It means, not related to mutations but to chemical changes such as methylation, acetylation, ubiquitylation, phosphorylation, that can interfere with the genetic expression. Chromatin modification is another way of epigenetic change.
