In reguard to minerals, hardiness is what?

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

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?

In each transformation of energy , some energy what?