Stars form from
a. collapsing dust clouds
b. black holes
c. collapsing galaxies
d. spiraling planets

Astudent conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all. 2. based on the experiment in the scenario, which visual aid would be most in showing the change in the plants' heights over time? a. a pie chart b. a line graph c. a timeline d. a bar graph

Brazilians, like the u. s., communicate directly and you have to be careful with the use of slang. their communication style is a. low-context b. high-context

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."