Answer:
Bombardment by asteroids
Explanation:
All of the other ones explain themselves
Answer:
There are three atoms in the equation
Answer:
May you post a picture for us to understand?
During a combustion reaction the carbon in a hydrocarbon compound is paired with Oxygen (O2) in the air to form Carbon-Dioxide (CO2), whilst the Hydrogen too pairs with Oxygen to form water vapour (H2O). Heat is also produced during this reaction.
Answer:
HDL absorbs cholesterol and carries it back to the liver. The liver then flushes it from the body. High levels of HDL cholesterol can lower your risk for heart disease and stroke.
Explanation: