The answer is A Plants use carbon and release oxygen, and animals release carbon and uses oxygen
B is the answer! Hope this helps :)
<span>If one determines that wolves are experiencing a reduction in their population that can be attributed to a virus the coyotes carry that is more harmful in wolves. this is an example of apparent competition.</span>
<span>. Estuaries have been called the "nurseries of the sea" because the protected environment and abundant food provide an ideal location for fish and shellfish to reproduce. Most commercially important fish species spend some part of their life cycle in estuaries. Besides fish, many species of birds depend on estuaries for food and nesting areas. Migratory birds use estuaries as stopover points for resting and feeding before continuing their journey. Marine mammals also use estuaries as feeding grounds and nurseries.</span>