Which of the following best describes a consequence of using a renewable energy source? . a. biomass energy pollutes water supplies.. b. natural gas causes air pollution when burned for energy.. c. nuclear power produces harmful radiation.. d. solar power is expensive and requires a large amount of space..

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.

What is the 77 element on the periodtic table

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material