<span>The circulatory system is vital in the exchange of oxygen with the cells in the animal's body because there is no living creature that can survive without oxygen, it keeps the body active.
</span>♡♡Hope I helped!!! :)♡♡
Answer: gas in the air, pollution
Explanation:
An example of an ecosystem that benefits people could be the ocean.
The ocean regulates the temperature of the earth, allowing a more comfortable place for people to live.
Hope this helps!
Answer:it is a
Explanation:because it just makes sence.lol
To feed nutrianse to the baby. whe the mother eats that goes to the umbilical cord and gives it nutriance
