What caused the melting of the moon's surface around 4 billion years ago to form the highlands? select all that apply. a. tectonic activity b. radioactive heating c. meteoroid bombardment d. impact with a mars-sized planetesimal

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

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

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants