Answer:
Smallpox has had a major impact on world history, not least because indigenous populations of regions where smallpox was non-native, such as the Americas and Australia, were rapidly decimated and weakened by smallpox. During the 18th century the disease killed an estimated 400,000 Europeans each year, including five reigning monarchs, and was responsible for a third of all blindness. After successful vaccination campaigns throughout the 19th and 20th centuries, the WHO certified the global eradication of smallpox in December 1979. Smallpox is one of two infectious diseases to have been eradicated.
Explanation:
Hope this helps!!!
When water vapor and carbon dioxide absorb heat and either radiate it into space, to other gases, or send it back to Earth, this is the <u>Greenhouse Effect. </u>
<h3>What is the Greenhouse effect?</h3>
This is the trapping of the sun's heat by gases such as water vapor and carbon dioxide.
When the heat is trapped, it can be radiated to other gases or radiated back to the Earth. This process is responsible for the rise in temperature noted around the Earth.
Find out more on the Greenhouse Effect at brainly.com/question/19521661.
#SPJ1
When sedimentary rock go to the bottom of a seafloor it sticks together over time and turns into metamorphic rock. Then metamorphic rock melts and when it cools down it turns into igneous rock. This process happen over and over and its called rock cycle.
Economic Reconstruction
Hope this helps and if it does give me a thanks :)
