The sodium ion content of the extracellular fluid
Answer:
pets can help boost your mood
Explanation:
if you do not have any pets you could have slight depression if there is no one to cheer you up such as your companion
Answer:
Depending on changes, that occur with DNA, all types of DNA mutations can be divided into two main groups:
gene mutation;
chromosomal mutation.
Explanation:
A. Carbon
It's carbon because it is in all plants and fossil fuels. Hope this helps and is correct.
Answer:
Amino acids
Explanation:
Proteins are made up of amino acids which come together to form polypeptide chains.
