The kidney is an organ that collects and water and excess water from the blood and sends them to the bladder where they are stored before being removed from the body. which two body systems works together to perform this function answer this

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?