I believe the correct answer from the choices listed above is option 1. ATP and calcium are the ones who participate in muscle movement. <span>Contraction is initiated by the release of calcium ions (Ca2+) upon the depolarization of the membrane, which is induced by nerve impulses.</span>
1.................,..........
Tanisha is not correct.
<u>Explanation</u>:
When the moon is closest to the sun, the light coming from the sun is blocked by the moon that is why moon’s shadow fall on the earth, thus moon looks dark i.e. solar eclipse. When the moon is furthest from the sun, the light coming from the sun cannot reach the moon as it is blocked by earth thus moon looks dark from earth i.e. lunar eclipse.