<span>Whales are more closely related to hippopotamuses than they are to cartilaginous fish such as sharks. </span>
<span>1. temperature
2.water purification
3. succession
4. alien species
5. conduct a survey of a species population in an ecosystem
6. adopt ecological conservation practices</span>
Answer:
The plant which I think it says clover i can see
Explanation:
plants are primary sources of energy because it makes it own food and doesn't take form other animals.
Amino Group, Carboxyl Group, and the R group
