21. A galaxy is a group of millions of stars. Our galaxy which is shaped like a spiral is called ...
A saturn
B. Mercury
C. Asteroid belt
D. The milky way
22. All skin contains a coloring substance as a protection from burning by the sun. this substance called ....
A. Melanin
B. Skin layers
C. Epididimis
D. Dermis
tolong dijawab yg bener!![]()
A saturn
B. Mercury
C. Asteroid belt
D. The milky way
22. All skin contains a coloring substance as a protection from burning by the sun. this substance called ....
A. Melanin
B. Skin layers
C. Epididimis
D. Dermis
tolong dijawab yg bener!
Jawaban:
21. D. The milky way
The Milky Way is a huge collection of stars, dust and gas. It's called a spiral galaxy because if you could view it from the top or bottom, it would look like a spinning pinwheel.
22. A. Melanin
They make a substance called melanin (say: MEL-uh-nun). Melanin gives skin its color. The darker your skin is, the more melanin you have. When you go out into the sun, these cells make extra melanin to protect you from getting burned by the sun's ultraviolet, or UV, rays.
Semoga Membantu^^
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