8. Which of the following is a requirement for exponential growth of a
population?
O A. There's competition from other organisms.
O B. There's a finite number of resources.
O C. There are no limiting factors.
O D. The population is in a climax community.

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

Which type of neuron stimulates muscles to contract?

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.