First question is D poor farming practices
Answer: Elephants.
Explanation: The tusks of this organism fits the description of Elephants tusks.
Amino acid is to protein as simple sugar is to cellulose.
Amino acids form proteins, the same way simple sugar forms cellulose.
Lipids form fats, it doesn't go the other way round. DNA forms DNA strands, not RNA.
I think the answer is true, I hope this helps friend.
