What are 3 potential solutions to stop heat waves? (what solutions are cities looking at) IN DETAIL

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above