Threatened is the definition used when describing a species at risk of extinction
Answer:
Egg.
Explanation:
Technically speaking, dinosaurs were some of the first living creatures on Earth, and they laid eggs long before chickens were around.
Answer:
I think it is C but I'm not 100% sure
I believe carbon dating does work to determine the age of the earth but, the answer might be <u>D</u>. Let me know if it was right.