The change in the composition of species in the community over time is the best answer
Hello, these are called PET scans.
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A model can help scientist to study the things that are difficult to understand that can not be observed directly. It allows scientists to examine and visualize that might not be accessible physically. All the natural science is based on the models, these are suggested and tested by observations.
Answer:
idivisible
Explanation:
I took the test and it was right
D) generals <span>similarities in appearance</span>
