75% species go extinct to be considered a mass extinction
B) No, many microorganisms, like those in your gut, are beneficial
As is turns out there are only about 100 different bacteria which are pathogenic. All other bacteria are completely harmless and, as this question states, some are crucial for proper human health as we exist in a symbiotic relationship with them. Bacteria in the large colon provide nutrients to us, and play an important role in the development of the immune system.
The gas responsible for the raising temperature during last decades is greenhouse gases, which is majoritarly composed by carbon dioxide. Its production increases during last years because of the increasing number of industries and polluting cars, despite the increasing taxes on them.
Greenhouse gas can absorb more energy (more heat) than normal gases like oxygen and azote, that is why the increase of CO2 increases the global temperature, and that's why it's called "greenhouse" gas.
Answer:
it causes the rapid increase in PH which may harmful for the for fishes and other aquatic lives.
Explanation:
There are a lot of materials which are used to neutralize the acidity of soil.some examples of such materials are slacked lime, quick lime, and liquid lime etc. Lime increases the PH and the concentration of calcium which helps in removal of phosphate from water. Raising PH also cause to remove the carbon dioxide from the water. But keep in mind that rapid increase in PH is harmful for the fishes.calcium oxide also causes the rapid increase in Ph therefore, it is not advisable to use in fishpond.