In the process of aerobic respiration, the krebs cycle (citric acid cycle) occurs in the a. chloroplasts. b. nuclei. c. lysosomes. d. mitochondria.

Ocean waves move up and down in circles, but transmit horizontally toward the shore.

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u. s. and mexico. the st. lawrence seaway provides an important trading route for the u. s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain