Allow people to smell different aromas and taste sweet, salty, and sour foods.
a. pain receptors
b. chemoreceptors
c. photoreceptors
d. thermoreceptors

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?

Monitor and apply fix up strategies

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel