Question

which statement about life on earth is true?
dinosaurs appeared before insects.
dinosaurs and insects appeared at the same time.
humans have been on earth for hundreds of millions of years.
humans have been on earth for a very short amount of time.

Explanation:

• Insects appeared about 400 million years ago, while dinosaurs appeared about 230 million years ago. So dinosaurs did not appear before insects, nor at the same time.
• Humans (Homo sapiens) have only been on Earth for about 300,000 years, which is a very short time compared to the age of the Earth (about 4.54 billion years).

Answer:

Humans have been on Earth for a very short amount of time.