How does oxygen move from the respiratory system to the circulatory system?
O A. By moving across a synapse
O B. By pumping through the heart
O C. By circulating in an artery
D. By diffusion across a capillary wall

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.