Maybe immune system and respiratory system
Answer:
The study of oceans and their life.
Explanation:
The study of oceans, including seawater, the ocean floor, and marine plants and animals.
Answer:
4
Explanation:
Because all the living things need carbon to make protein,carbohydrates,lipids
Answer: pollen
Explanation: The anthers bear the pollen grains which contains the male gamete(sperm).
<span>cm x (in/cm) = in
21 cm x (1 in / 2.54 cm) = 8.3677 in </span>
