I answer i would choose is C
it'll get very dense and pull together with Gravity to eventually make a star.
Answer:
A. Vaccines
Explanation:
These are meant to prepare the body for the possibility of infection by building up immunity.
Have a great day!
Autotrophs are organisms that uses light energy or energy stored in chemical compounds to make energy-rich compounds. The reason why autotrophs always occupy the lowest level of ecological pyramids is because they are the link between the sun's energy and the organisms that cannot manufucture their own food. Without an abudant amount of autotrophs we would be severely lacking in atmospheric oxygen and food.