The executive branch is responsible for implementing the laws that are created by the legislative branch (the Senate and House of Representatives). The head of the executive branch is the President of the United States. His role includes acting as the Commander-in-Chief of the Armed Forces.
There are many kinds of bacteria, some which cause deadly diseases and some which are helpful to man. Those which are harmful cause diseases in man, animals, and plants. They can cause food to spoil, even poisoning people who eat them. But there are a great many bacteria that man and nature use in helpful ways. For example, bacteria play an important role in making buttermilk, sauerkraut, cheese, and vinegar by causing a chemical change called fermentation. Bacteria also attack dead plants and animals, and break them down into nourishment for the soil. Bacteria are even used to purify water in sewer treatment plants!
Article Summary: Bacteria is the most useful microorganism in the environment and beneficial for human beings. But it also has some harmful effects on human body.... The planet earth is full of bacteria and they play an important role in the different functions whether they are related to humans, animals or plants.hough bacteria are mostly beneficial for the human body but if the person is weak and his immune system does not fight against diseases then these beneficial bacteria can also cause infections in the body.