Scientists recently discovered that there is this specific gene called "Pitx1" that is responsible for the less of pelvic spines in animals 15,000 years ago. Among the most common example of the animals affected by this gene is are the freshwater skittlebacks.
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It's letter A - Obligate anaerobe.
<em>Obligate anaerobes</em> are microorganisms killed by normal atmospheric concentrations of oxygen. A <em>facultative anaerobe</em> prefers to produce energy in the presence of oxygen but can survive without it. <span>A <em>photoautotroph </em>is an organism that converts light energy into chemical energy. </span><span>Prokaryotes may perform </span>aerobic<span> (oxygen-requiring) or </span>anaerobic<span> (non-oxygen-based) metabolism and some can switch between these modes. Since we're talking about an environment without oxygen and dies when exposed to oxygen, the preferable answer is A.</span>
Answer:
<u>C. Medulla Oblongata</u>
Explanation:
The Medulla Oblongata controls both breathing and heart rate.
It’s going to be on this one C
