Lunar phases occur when the moon appears to change shape as seen from earth. what causes different phases of the moon?
select one:
a. the tilt of the axis of earth
b. the shadow of earth falls on the moon
c. the alignment of the sun, moon, and earth in a straight line
d. the amount of the sunlit side of the moon that faces earth

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

What must be done to breed dogs for a partical trait

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.