The lungs, nose, and trachea are organs of the respiratory system. which best describes these organs? a) they deliver nutrients to the other tissues. b) they deliver oxygen to the blood. c) they are both used for support. d) they break down food.

Christie's doctor recommends that she eat 40 grams of protein a day. she's already consumed 50% of her protein recommendation for the day. how many servings of the given snack should christie have to meet her daily protein recommendation?

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

How water is moving through the ecosystem ?