Answer:
if your asking what 2 times 2 is its 4
Explanation:
When you heat air it expands. When air expands it becomes less dense than the air around it, in turn making it rise.
Hope that helped
Answer: they devised an innovative irrigation system, which created a surplus of food
Answer:
Infectious includes
Tuberculosis
HIV/AIDS
Cholerae
Non infectious includes
Heart disease
Malaria
Cancer
Explanation:
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.
Examples are SARS, influenza, the common cold, tuberculosis (TB), Hepatitis A and B.
Disease that is not contagious is called a noninfectious disease. These diseases are not caused by pathogens. Instead, they are likely to have causes such as lifestyle factors, environmental toxins, or gene mutations. Common types of noninfectious diseases include cancer, diabetes, and immune system diseases
Answer:
The right answer is C.
Explanation:
Glasnost was one the major political initiatives launched by Soviet Secretary-general Mikhail Gorbachev. For the first time in Soviet history, there was open discussion of many key political and key issues. Gorbachev´s intention was to reform the Communist system, to democratize it and make it less authoritarian. It was sort of a spring in public affairs. Nevertheless, a freer new atmosphere led to protests in many Soviet republics, nationalist sentiments were reborn, political instability ensued. In the last years of the Soviet Union, Gorbachev resembled more and more a wizard that had liberated forces he could not control anymore. His position became too weak after a conservative coup d´etat staged in Moscow. It failed but severely undermined his position and strengthened the standing of the president of the Russian Federation Boris Yeltsin. The Soviet Union broke apart in December 1991.
