Answer:
A. Asteroids
Explanation:
They are asteroids.
Here you find pictures of these amazing asteroids. From left to right you will find Ceres, Ida and Gaspra.
The axis is an imaginary line going through the earth so the way the earth is "tilted" would tell you,for example, if the northern hemisphere is tilting toward the sun, it will be summer in the northern hemisphere.
Enzymes are biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. The vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.