Answer: fossils are remains of dead or extinct animals/plants
D phytoplankton i believe
Answer:
True
Explanation:
All organic (naturally occurring) molecules are classified into 4 general categories: carbohydrate, lipid, protein, and nucleic acid. Foods you consume consist of these 4 molecules.
Answer:
carbohydrates
Explanation:
Organic molecules composed of carbon, hydrogen, and oxygen in a ratio of 2-hydrogen atoms to every 1 oxygen atom.