Answer:
1 factor deffer which is independent variable which is controled in control groups
It should be oxygen because plants take in carbon dioxide, sunlight, and water and get rid of oxygen, energy, and water. (see pic)
A group of specialized cells that transport fluids and nutrients is called a vascular tissue
Genes in eukaryotes are dispersed and not clustered onto a single operon
Answer:
amino acids can build proteins!