The rainbow is almost always in the day sky, produced by sunlight. Very rarely, one can appear in the night sky, produced by moonlight.
Erm, sentence fragment! It is always the same shape, it just phases. This is when the earth is blocking the sunlight from getting to the moon, and so shadows fall on it, making it appear to change shape. Please learn some grammar.
No, the waxing moon phase refers to the increasing illumination of the moon as seen from Earth due to the sunlight reflecting off its surface. The waxing moon does not affect the amount of sunlight reaching the Earth.
Almost always the mother.
Yes, there is a region near the Moon's south pole called the "South Pole-Aitken basin" that contains a large crater which is always in shadow. This permanently shadowed region is thought to hold deposits of water ice and other volatile substances that have been preserved for billions of years.
It is awkward, but not wrong, if you mean "You always stop reading a book before you get to the end of it." There is an idiom, "almost always" meaning usually, normally, but "always almost" is not the same. If you meant "You almost always (= usually) complete reading," you must put those two words in the right order.
In plainchant, a sentence of text almost always ends with "a cadence" (why did you choose music appreciation, that was my biggest mistake)
Cadence
Radiation therapy is almost always recommended following a lumpectomy.
They usually start with sunlight, then some kind of plant, etc.
Because there is almost always constant sunlight on the equator.
They're
because the tropics have fairly direct sunlight and ho weather all year.
It is not a sentence. There is no main verb.
BASE jumping
Yes, all lizards need a uvb light unless kept outside where there is almost always sunlight.
The simple verb in the sentence is "manages."