AP BIOLOGY

Detailed explanation-1: -Living things need need air, water, food and shelter to survive. There is a difference between needs and wants. Students will be able to identify the four things that organisms need to survive.

Detailed explanation-2: -An ecosystem must contain producers, consumers, decomposers, and dead and inorganic matter. All ecosystems require energy from an external source – this is usually the sun. An ecosystem must contain producers, consumers, decomposers, and dead and inorganic matter.

Detailed explanation-3: -Carbon and nitrogen are examples of nutrients. Unlike energy, matter is recycled in ecosystems. In the figure below, you can see how (Figure below). Decomposers release nutrients when they break down dead organisms.

Detailed explanation-4: -Most living things need food, water, light, temperatures within certain limits, and air. Living things have a variety of characteristics that are displayed to different degrees: they respire, move, respond to stimuli, reproduce and grow, and are dependent on their environment.