The stem is large with a space in the center. How does this help the cactus to survive?​

Which of the following statements best describes the relationship between the environment and human health? a. the environment is the only factor that affects human health. b. many aspects of the environment can have an impact on human health. c. human health is impacted by changes in climate. d. the environment has no impact on human health. select the best answer from the choices provided

Which of the following is not a defining characteristic of plants?

Which layer will become saturated first when rain falls?