3. When muscles are active, cells use energy and oxygen at a higher rate and produce waste products, such as lactic acid, more rapidly. Explain how your body reacts to keep itself in balance during these
periods of activity.

The largest unit within which gene flow can readily occur is a

Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species

Animals have a variety of adaptations,including trachea and gills, which allow this key process to occur. which provides the molecules necessary for cellular respiration and efficient atp synthesis?