What is structure 3, and how does it help sustain life?
A.
Structure 3 is the nucleus, which is the control center of the cell.
B.
Structure 3 is a chloroplast, which is the site of photosynthesis.
C. Structure 3 is the cell wall, which gives the cell structural support.
D. Structure 3 is a mitochondrion, which is the site of cellular respiration.

Match each idea to the correct principle of government. federalism separation of powers checks and balances divides the powers of government into different branches arrowright divides the powers of government between central and state governments arrowright each branch of government has certain powers that prevents the abuse of power on the people arrowright