Which of the following are the starting substances in photosynthesis? a. glucose and oxygen. b. glucose and carbon dioxide. c. water and oxygen. d. water and carbon dioxide.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Producing disposable grocery bags consumes resources. recycling disposable bags is a solution that can recover some of the resources used to make new bags. which of the following behaviors could further refine the solution? a. disposing of bags by burning them b. reusing bags whenever possible c. using bags at once so that they do not break d. using only nonrenewable materials to make new bags subject is environmental science for apex users