Economic failures and years of warfare, the Chernobyl disaster, perestroika glasnost and Mikhail Gorbachev all of these factors contributed to the collapse of the Soviet Union or USSR in the year 1991. Some of these incidents had a direct impact on the breaking of USSR into several countries, while others had a direct role.
Answer:
A
Explanation:
says nothing about presidents just about senators and house of representatives.
Answer: all but the upper left corner
a credible site should have evidence to back up the claim, a good reputation, and be able to see the same information on other sites.
For example, the red cross. you're trying to look up how to help a choking infant. it is a worldwide known and accurate, you can find the information on other sites, and it tells why it works.
Climate Change is caused by a number of things. The effect that climate has on extinction is very big. The bio-diverse Earth can't keep up with the rapid changes in temperature and climate. The species are not used to severe weather conditions and long seasons, or a changing chemical make-up of their surroundings. As more species die, it is only making it more difficult for the survivors to find food. The warmer climates we are used to present-day are perfect for diseases and epidemics to thrive.
The changes in sea levels and currents is a result, in part, of the melting freshwater. The denser, saltier water sinks and forms the currents that marine life depends on. Ocean floor spreading and rising also affects sea level. A small rise in the ocean floor can displace a lot of water onto land that is all ready occupied. The gases from the volcanic activity can also be absorbed by the water, thus changing the chemical composition, making it unsuitable for some life.
