Answer:
The way something changes to fit its natural environment or surroundings to have a better chance at success for anything
Explanation:
The answer is The law of ''gravity'' helps explain why the density of air as the altitude above earth's surface increases.
False. That is competiton, the stuggle between different species to survive with limited resources. Natural selection is when they organisms with traits that help them survive pass them (the traits) on through reproduction. This makes their valuable traits possible to rise in their offspring.
Humans ferment lactic acid in muscles where oxygen becomes depleted, which is why sometimes if you finish a run and don't stretch soon you have have discomfort. <span />
