Energy-Photosynthesis and Respiration

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In the human body, muscle cells have an increased need for energy during exercise. To help supply this energy, the body will immediately increase —

Which of these processes is carried out in the same way in both plants and animals?

Scientists hypothesize that oxygen began to accumulate in Earth’s atmosphere after the appearance of living things with the ability to —

The process of photosynthesis ultimately converts light energy into —

The respiration system of frogs differs from mammals because frogs —

Photosynthesis is important for almost all life on Earth because it —

The energy in the food produced by autotrophs or taken into the bodies of heterotrophs must be changed into a form that cells can use. The energy-transferring molecule used by cells is —

Algae and multicellular plants are autotrophs because they —