Answer:it is a similar thing to natural selection, the ones less effected by it survive and adapt over time to survive the vaccine. However, google defines it this way, "The adaptive immune system, also known as the acquired immune system or, more rarely, as the specific immune system, is a subsystem of the overall immune system that is composed of highly specialized, systemic cells and processes that eliminate pathogens or prevent their growth"
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Oceans upwelling decreases, reducing levels of nutrient-rich water
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Typically, trade winds blow from east to west in the Pacific pushing warm surface ocean waters towards Asia. This causes upwelling of cold ocean currents from the depths of the oceans on the west coast of South America bringing up nutrients from the depths.
During Elnino, however, these trade winds weaken, and predominant winds blow eastwards, reducing this upwelling of colder deeper waters.
Black death, also known as the bubonic plague was one of the worst pandemics that ever happened, killing around 1/3 of Europe's population. It spread to Europe in the mid 1300's from China.
Black death victims were treated through magic, witchcraft, prayer and other methods. As for the two other options, they used medicine, but not antibiotics and radiation hadn't been discovered yet (it was discovered in the 1900's)
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On average, 2,000 to 3,000 orangutans are killed every year. While exact orangutan population counts are always a challenge – estimates put current counts between 50,000-65,000 orangutans left in the wild.
At this rate of loss, many experts believe orangutans could be extinct in the wild in less than 50 years.
Never before has their very existence been threatened so severely. Economic crisis combined with natural disasters and human abuse of the forest are pushing one of humankind’s closest cousins to extinction.
The main threats in today to the survival of orangutans
Loss of habitat through deforestation
Palm oil plantations
Illegal hunting
Illegal pet trade
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Answer: grows and produces oxygen to all living things bye idfk
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