Choose all the answers that apply. sex-linked disorders
affect males more than females
affect females more than males
can be carried by females, without being expressed
are always expressed in males
are caused by genes carried on the x and y chromosomes

How can you approximate the number of calories required to keep you in energy balance?

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

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?