The awnsers would be D for the first one and A for the second. Let me know if you want an explanation.
The answer that would best complete the given statement above would be the second option: MUSCLES. Contractile proteins are found in muscles. <span>The muscles themselves contain muscle fibers, each of which contains cylindrical strands of </span>contractile proteins <span>called myofibrils. Hope this answers your question.</span>
I belive the correct answer is D
hope this helps:)
They produce oxygen they are used as shelter, they are used for blocking the shade, they sustain other animals that sustain the planet and us.
