Which celestial objects are left over from the early solar system and did not form into planets?
a. saturns rings
b. jupiter’s moons
c. pluto and charon
d. asteroids

Option (D)

Explanation:

Asteroids are defined as the rocky materials that are of variable size and abundantly present in space. These are mostly found in the asteroid belt that is present between the planet Mars and Jupiter, where they frequently collide with each other and revolves around the sun.

Asteroids are considered to be the particles (objects) that remained in the universe right after the formation of the solar system that has taken place about 4.6 billion years ago. These materials did not form into planets, whereas they are oriented in a scattered manner in space. They can sometimes enter the earth's atmosphere and can cause a tremendous effect if it strikes the earth's surface.

Thus, the correct answer is option (D).

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?