Until recently, the land snails of the Hawaiian Islands were largely restricted to a single valley. Because snails move only short distances, the high ridges that surround the valley were effective barriers to their dispersal, and about 1,000 species of land snails evolved. This illustrates how speciation rates are

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

You have 2 plants of the same type and same size, same amount of leaves. one of them is put inside the house and the other one is put in the balcony. you water them saturday, one plant with 200 ml and the other with 400 ml of water. which one of your plants need less water? explain.

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.