<span>a. they did not co-evolve with the natural species and lack natural controls, like predators</span>
D) The AV valves are supported by chordae tendineae so that they do not blow back up into the atria during ventricular contraction.
<h3>Answer:</h3>
<em>LETTER </em><em>C</em>
Explanation:
MAKE ME BRAINLIEST AND FOLLOW ME
Answer:
C. biceps muscle contracts
Explanation:
Answers for the quick check are
B: B
D: The muscle would continue to contract uncontrollably.
A: The muscle would be permanently relaxed.
C: biceps muscle contracts.
B: smooth muscles