On Earth, we all know gravity affects everything around us. ... There's no gravity to pull blood into the lower part of the body. Instead, blood goes to the chest and head, causing astronauts to have puffy faces and bulging blood vessels in their necks.
The answer to your question is true.
When volcanoes erupt, they emit a mixture of gases and particles into the air. Some of them, such as ash and sulphur dioxide, have a cooling effect, because they (or the substances they cause) reflect sunlight away from the earth. Others, such as CO2, cause warming by adding to the the greenhouse effect.
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#2 replicates and verified, it should never be biased because then the data isn’t accurate, can’t be tested without a control because again isn’t accurate, and lastly if it ignores parts of the method it is not accurate hope this helped :)
