Can someone help me with these

Which best summarizes the finding of avery? a. some traits are recessive. b. humans reproduce sexually. c. dna is a transforming factor. d. traits cannot be inherited.

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

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?