The spectrum of a distant star contains sodium lines that are offset from their normal position, as shown. What is the most likely explanation? A. The star is relatively hot.
B. The star is relatively cool.
C. The star is moving rapidly toward us.
D. The star is moving rapidly away from us.

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.