Oxygen moves from the air sacs in your lungs into your blood capillaries because the
concentration of oxygen is higher in the air sacs and lower in the capillary blood. Which
type of transport does this example
represent?

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Long term exposure to waves can cause sunburns and skin cancer.

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?