What does the abbreviation “ref.” stand for?

Astudent is writing a conclusion for a research based informative essay on the possibility of exploring and inhabiting mars. what should he include in his conclusion. select two options

Which sentence should be revised to include vivid imagery

The following question is based on your reading of a midsummer night’s dream by william shakespeare. what type of creature is bottom turned into? a. a goat. c. a mouse. b. an elf. d. a donkey.