Ernest rutherford was the first scientist to suggest atoms had a central location where positively charged particles were present.

what do we call this central area of an atom that contains protons?

a. nucleus
b. cloud
c. shell
d. election

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?