Because the earth's rotation isn't a perfect circle, so it gets different amounts of sun in certain times
Hypertrophy is the process that occurs when fat cells swell and enlarge. Hope this helps!
Helicase "unzips" the two strands of DNA. During DNA replication.
When you breath in you breath in oxygen, which comes from plants, when you breath out, you breath out carbon dioxide, which is what plants breath.
<span>A cell is surrounded by water, there is also a lot of water inside.</span>
-The tail go together
