Which of the following are the starting substances (or reactants) in photosynthesis?

Which pronoun has an unclear antecedent in the following sentences? the sixth-grade students liked volunteering their time to read to the elderly people in the hospital. it made them happy. a. their b. it c. them d. no unclear antecedents

What are three voluntary behaviors that is not control by results?

Researchers have found that it takes to view a mental image that is larger or covers more distance than a smaller or more compact one.