The diagram represents the functional unit of a nervous system. which structure secretes a neurotransmitter? 1. structure a 2. structure b 3. structure c 4. structure d listen submit answer previous next

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?

Match the description of each organism to the appropriate category

Which of these is a provisioning service people get from the ocean