Anew molecule of dna is made of two entirely new strands one original strand and one new strand two strands that contain old and new parts two strands from the original molecul

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.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation