1. stars of which color have the highest surface temperature? a. red b. orange c. yellow d. blue 2. stellar distances are usually expresses in what units? a. miles b. kilometers c. light-years d. none of the above 3. the measure of a stars brightness is called its a. magnitude b. parallax c. intensity d. color index

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.

In the water cycle , when does water undergo a chemical change

The cellular plasma membrane is selectively permeable, which means some materials move through it while others cannot. the movement of materials into and out of the cell is called membrane transport. this activity will you identify the different mechanisms of membrane transport