Covalent bonds are the strongest chemical bonds. They are chemical bonds in which electrons are shared between atoms.
Answer:
Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned.
Explanation:
Answer:
C. Systemic arterioles respond to a decrease in PO₂ by dilating, but pulmonary arterioles constrict in response to decreased PO₂.
Explanation:
In the arterioles, vasoconstriction is a response to high oxygen while vasodilation is a response to carbon dioxide and low pH. However, in the pulmonary arterioles, vasoconstriction occurs as a response to low oxygen and this mechanism is called hypoxic pulmonary vasoconstriction (HPV).
Answer:
carbon dioxide
Explanation:
It is a non-flammable gas that extinguishes fire by displacing oxygen. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.
Answer:
DNA codes for RNA which codes for proteins.
Explanation:
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