The sun and moon are very different sizes, but often appear to be the same size. during a solar eclipse, our tiny moon can totally block the giant sun because of
a: the dark side of the moon facing earth.
b: the large shadow earth casts on the sun.
c: their differing distances from the earth.
d: the reflection of light waves from the sun.

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?