<span>Observations show that all galaxies tend to move away from earth, and that more distant galaxies move away from earth at faster velocities than do galaxies closer to the earth. these observations imply that</span> galaxies with high speeds as measured from Earth are moving away from Earth and are farther from Earth than galaxies with lower speeds.
Answer: The biogeographic Amazon ranges from 7.76-8.24 million sq km (3-3.2 million sq mi), of which just over 80 percent is forested. For comparison, the land area of the United States (including Alaska and Hawaii) is 9,629,091 square kilometers (3,717,811 sq km). Nearly two-thirds of the Amazon lies in Brazil.
Explanation:
Air pollution is the answer. The substances in the air could be pollutants which can harm your airways which can be really harmful to an asthmatic. I personally know because i have asthma myself.
Hope I hepled :)