Answer:
1. Air warms, becomes less dense, it rises
2. Air cools down, increases density (becomes denser), it sinks
Answer:
carbon dioxide
Explanation:
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because with to much of it in the atmosphere it would become harder for us to breath and the affects of oxygen deficiency are bad.
They produce many fish with food which is positive, but the negative impact they can have is when there are too many nutrients available phytoplankton can grow out of control, in which they will produce harmful algae blooms that are toxic and can harm sea life.
Answer:
c
Explanation:
An experiment in which an observer tests a hypothesis by looking for changes brought on by alterations to a variable. In a controlled experiment, an independent variable is the only factor that is allowed to be adjusted, with the dependent variable as the factor that the independent variable will affect.
in Basic terms The control group provides a baseline that lets us see if the treatment has an effect.
Por cada milímetro cúbico sería 100,000 neuronas sino me equivoco