A particular plant species is pollinated by a certain insect species. The insect species depends on the plant species for food. Which term describes how this relationship forms? A. reproductive isolation
B. co-adaptation
C. instantaneous speciation
D. mass extinction

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.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called