Extracellular matrix is made of extracellular protein fibers and ground substance. True or False?

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?

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Several billion years ago which gas was the least prevailant in the atmosphere