A silk fiber is made from?

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction