If an animal lived millions of years ago, could carbon-14 be used when it died? why or wht not?

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.

the contamination

we are putting to many trash.

im not intirely sure but i think the anwser is d relative humidity