In which sealed container would the organisms be able to continuously cycle O2 and CO2 gases? A. A terrarium with tadpoles and a pool of water

B. An aquarium with fish and plastic plants

C. An aquarium with rocks and snails

D. A terrarium with a plant and a snail

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms