For nine month because it have to be strong
Answer:
It is a group designed to not be affected by any variables and to be used as a comparison to the other groups. It helps increase the reliability of your results, as it shows your independent variable is what made something happen in your experiment.
I think the answer is frequency if I remember correctly
Ranchers, though, remained steadfastly opposed<span> to </span>reintroducing<span> a species of animal. so the answer is (B)
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Answer:
Many small organisms can be preserved within these layers of sediment through time. The changing abundances of these fossils through time can tell us whether a change in the environment or climate was gradual or abrupt. Studying fossil pollen and other fossils helps scientists to learn more about climate change.