13. (18 points) Write a synthesis of compound J starting with 3-methylbutan-2-ol, acetylene (C2H2), formaldehyde (CH2O), and any reagents necessary.

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Light waves travel than sound waves.