A solar eclipse that occurs when the moon's
- umbra does not reach Earth's surface is called
1. an umbral solar eclipse.
2. a total solar eclipse.
3. a penumbral solar eclipse.
4. a partial solar eclipse.
5. an annular solar eclipse.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Cedric has a low fever and minor aches. yesterday, he went to the doctor for his booster shot and receive the flu shot. which best explains why he has this reaction?

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic