The sun.
I hope this helped
MRNA is needed in the cells because it directs the synthesis of proteins which is found in the cytoplasm. It is a molecule that carries the message contained within DNA to the ribosome. The Proteins are assembled on the ribosomes using the mRNA nucleotide sequence as a guide.
Answer:
1. Differences in air <u>pressure</u> cause movement in the air, which creates <u>wind</u>
3. As the air <u>cools</u> it becomes more dense and <u>falls</u> to the earth's surface
Explanation:
hope this helps :)
Zooplankton eat algae. this is an exampke of a feeding stage or trophic level
