23 pairs of chromosomes, since there is 46 singular chromosomes.
A physical change is when something don't permanently change
Answer: There are C - C bonds and C - H bonds.
trust me! I took a test with this question and got 100! :)
The answer is (4). You may recall the term "radiometric dating," which refers to the dating of old artifacts by measuring proportions of certain radioactive isotopes they contain and making calculations based on their estimated half-lives. Geological formations are dated in this way.
Something like that wouldn't dissolve in oil
