The is the layer of the atmosphere where satellites and the space shuttle orbit the earth.
a. troposphere
c. mesosphere
b. stratosphere
d. exosphere

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Which accurately compares concave and convex lenses?

What can you increase the strength of an electromagnet by