Lungs have a pulmonary circulation
I'm pretty sure the answer is B
Answer:
There are different types of proteins present which are made of amino acid sub-units. Proteins play various important functions in an organism's body. Some of these functions are:
- Growth and maintenance of cells and individuals.
- Antibodies are proteins which provide immunity.
- Enzymes are proteins which catalyze different reactions.
- Many proteins allow movement of substances inside and outside of the cell membrane. They are known as carrier proteins.
- Many proteins serve as structural proteins.
Answer:
Excess nutrients from fertilizer runoff
Explanation:
The nutrients can create bacteria for the algae
Approximately 1,000 to 30,000 years old
