B. atmosphere since the atmosphere is made up of o2, co2 (a greenhouse gas) and nitrogen. those are the primary elements
<span>Proteins are composed of __20__ amino acids, of which __9__ are essential amino acids and __11__ are nonessential amino acids.</span>
Answer:
Tanginaka wag kang puro brainly
Explanation:
ang kyot ko
Answer:
an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription. ... For example, all species require a mechanism by which transcription can be regulated in order to achieve spatial and temporal changes in gene expressio
Explanation:
according to Google
Answer:
B)
Explanation:
CirculaTory system transports oxygen to the cells.