The organisms in a pond and the physical factors
influencing them best describe
(1) a population (3) a biosphere
(2) an ecosystem (4) a food chain

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

To take a whiff of your favorite food, you use both? a. motor nerves and your digestive system b. sensory nerves and your immune system c. motor nerves and your skeletal system d. sensory nerves and your respiratory system