C. A higher amount of addictive chemicals are needed to get the same high when fewer receptors are present...
Answer:
Potassium
Explanation:
All of the options are compounds, except for potassium which is an element
Answer:
Insulin and glucagon
Explanation:
Insulin and glucagon are hormones that help regulate the levels of blood glucose, or sugar, in your body.
Actually a living thing is not a system. Every part of our body, like our lungs brain or heart, can be seen as a separate system. Therefore we are giant arrays of systems working together to keep you alive
Answer: No
Explanation: It is beneficial if the animals that are disadvantageous doesn't reproduce so it doesn't discredit natural selection. The traits in which variation is occured are more suitable for organism to live and reproduce in the environment are preserved and are passed from generation to generation.
However, natural selection effects limited number of progeny.