Question 1 What happens to matter in an ecosystem? 1) A. It cycles between parts of the ecosystem B. It is created by producers. C. It is destroyed as time goes on. . D. It is lost to other ecosystems.

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?

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi

Which organelle plays a role in intracellular digestion?