Question 16 The fosse record is assembled by combining the data scientists learn from the fossils they study. What does the fossil record allow scientists to develop?
a record of how Earth formed and changed over time
an understanding of the forces operating in nature
a complete history of all living things that have existed
D
a timeline showing the evolution of life from earlier species

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.

Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%

How does the carbon cycle involve an exchange of carbon