Answer:
Using a control group means that any change in the dependent variable can be attributed to the independent variable.
Explanation:
This website could help you http://www.weather.gov/cle/Seasons
Proximity means close to you. For example A few yards. Its proximity to the sun in its passage near that body.
<span>It's is the second one. The waste materials generated by one organism are often reused by other organisms.Mass, or matter, is conserved in all physical and chemical changes. Matter is not created or destroyed within ecosystems, it only undergoes physical or chemical changes. One example of this process is that the waste materials generated by one organism are often reused by other organisms as food or nutrients.</span>
the outer crust isnt made of iron and nickle because thats what we are living and walking on.
please mark brainliest
