For which deadly feline disease do we not have a vaccine available?

Which level of consumer had access to the smallest apply of energy

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?

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities