The capital city of Tenochtitlan could be easily defended from attack.
A. "Chloroplast" is the main organelle for photosynthesis.
They spread diseases to the Native Americans, and since they had never experienced any similar diseases they quickly died
D Cause and Effect
A virus causes a cold and carelessness causes errors
WHAT IS THE PROBLEM WITH SOCIAL SECURITY? The answer is a long-term shortfall. Social Security plans for solvency over 75 years, but because of demographic pressures and the weak economy, it is currently solvent only until 2033. After that, without reforms, it would pay about 75 percent of promised benefits.