Why bacteria disease are difficult to control

Viruses pose a challenge to the body’s immune system because they hide inside cells meaning it is harder for them to control the disease. It can easily spread from cell to cell and can be hard to control meaning we look to our immune system to help and to give our body the support it need to fight it off.

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

satellites are frequently used to make observations of the orbit on earth