It was<span> an increase in nativist feelings in the nation.</span>
Answer:
Diffusion transport is responsible for oxygen entering blood cells because when the oxygen concentration in the alveoli in the lungs are too high it diffuses with the red blood cells by giving it oxygen and receiving carbon dioxide.
Explanation:
These fossils are very useful for us because we can use them to date the layers of rock that they are found in. Fossils that can be used in this way are called index fossils, and rock layers with the same index fossils in them can be correlated. Not my answer, link here for full
http://peter-mulroy.squarespace.com/correlating-rock-layers/
It’s just a black picture for me what is it