A mouse is given an experimental drug that increases the number of mitochondria in their muscle cells. What effect does this have on the mouse's endurance?

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000