Answer:
Compare autotrophs to heterotrophs, and describe the relationship between these two groups of organisms. Autotrophs make their own energy, while a heterotroph must eat another organism to be able to get energy. ... Once the energy flows from the system it gets recycle for future use in other organisms.
Answer: C. DNA polymerase joins nucleotides in one direction (5' to 3')
Explanation: DNA polymerase joins nucleotides in one direction (3' to 5')
Answer:
C. cell- tissue- organ- organ- system
B oxygen because they need it to survive