Why are the male testes located in the scrotum outside the body?

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air