Answer:
An atom makes up everything in the universe
Explanation:
This is true. There are theories that scientist believe that everything become fossils. Some just aren't permanent because of the weak bone structure in most animals.
Layers of fossils in pillars, the rock covering them is dated and we get an exact time of each layer.
True because all organic compounds have carbon
<span>Organisms that have ventilation systems will draw in air (or
water) that is rich in oxygen and will draw out air that has carbon dioxide. This
is essential for a multicellular organism to thrive because carbon dioxide is
harmful for an organism since carbon dioxide (CO2) is a waste product. Such is
the system that contain veins, capillaries and arteries. On the other hand, organisms
that don’t have ventilation system, can survive without it because they are
single-celled and the path for the nutrients and needed oxygen is so short that
they can efficiently exchange gases at the surface.</span>