Which describes a difference between light waves and sound waves

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

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

How much does one sucrose molecule weigh in grams?