Answer:
It prevents their species from going extinct.
Ask your teacher. Depending on what he/she wants, the teacher may or may not deduct points from your assignment. Good luck!
Circulatory system;<span>The circulatory </span>system<span> circulates blood through the </span>body<span>, </span>supplies<span> cells with </span>oxygen<span> and </span>nutrients<span> and</span>removes waste<span> products. Organs: heart, arteries, veins. ... The respiratory </span>system supplies<span> blood with
</span>oxygen<span> in the lungs and </span>removes<span> carbon dioxide.</span>
An autotroph is an organism that can build its own food
Sixty six is D and sixty seven is A
