Which of the following supports the idea that persistence in environmental protection is a necessity

This is so important ugh its 25 points

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?

If your blood becomes too concentrated with iona, what will happen to the red blood cells