Essment
understand main ideas
1. main 2. summarize the three types of biodiversity.
3. generalize why maintaining biodiversity has a direct economic value to
humans.
4. differentiate between the direct and indirect economic value of biodiversity.
5. evaluate and discuss the importance of maintaining biodiversity for
future medical needs.
think critically
for the de m ont of a building proiect in

Autotrophs a.consume their food to get energy b.may use photosynthesis to gain energy c.are also called consumers d.cannot use solar energy

Which muscle is responsible for inhalation ?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.