Which is an example of the bottleneck effect? green beetles move to a new location and build a new colony there. green beetles survive as birds don't see them, whereas brown beetles get detected. insecticide spraying eliminates all but a few of the beetles on an island.

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.

Twind is considered to be an abiotic factor because it.?

How do you date a sample of rock that you suspect as being one of the earliest on earth