Answer:
Shark skin has been used by many cultures as sandpaper. It's kept shipmates safe in slippery-when-wet conditions. Swimsuits modeled on shark skin are said by Speedo to reduce drag by up to 4 percent. Now, research by two separate groups could lead to synthetic shark skin that would make ships and submarines faster and less expensive to operate.
Answer:
b is the correct answer ok bro
Answer:
D) a scientific journal about chemistry and a biography of a famous chemist
Mitochondria, plastids and chloroplast all are surrounded by a double membrane
The answer is Complement
this is for my Gradpoint fellas
