C. crossing over This is because each gene have a piece of each other Hope this helped=)
6. a - transgenic organism is one whose genetic material has been altered by genetic engineering (i.e. man!)
9. a - biomedical research
10. b
13. b
16. d
18. b
Answer:
Sea cucumber,Vulture, and worms
they feed on dead organisms
Explanation:
I believe the answer to this is substitution <span />
