What causes ocean surface currents? question 1 options:

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.

What are positive impacts of algae? how is it used?