I'm pretty sure it's carbohydrates
How many electrons the two atoms are sharing determines how many covalent bonds two atoms can make. :)
Answer:
It is the brain of the cell and it tells the other cell parts what to do.
It holds the cell's DNA
Answer: The bright warning colors scare off any predators thinking of having a tasty snack.
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:D
Explanation:
Answer:
Carbon dioxide enters the alveoli, and oxygen enters the capillaries.
Explanation:
This describes the exchange of gases in the lungs. When blood from the rest of the body gets to the lungs through the capillaries, oxygen flows from the alveoli which are tiny air sacs in the lungs, into the blood in the capillaries.
Carbon dioxide from the blood brought to the lungs will then flow into the alveoli which will then expel it through the nose. This repeated process ensures that the body keeps getting oxygen and expelling carbon dioxide.
