how do we know that global warming is happening?and that human activity is the primary cause
Answers
Explanation:
On the basis of composition, matter can be classified as compound, element and mixture. Solids, liquids and gases are physical states of matter
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the idea of global warming has been around since 1869. and few cases and examples are:
Explanation:
global warming or climate change is a huge topic of debate in today's world, few people believe that global is not real and tht it does not exist or affect the earth in any way. but many scientist have come to the conclusion that global warming is taking affect on the earth's climate and temperature. throughout the years, scientists have discovered that the earth's temperature rises and is not consistent.
few people theorise that , the temperature change is the natural course of life and tht humans do not have any thing to do with that. but in fact, due to the excessive amount of carbon dioxide released by humans doing mere chores like cooking and burning charcoal etc can create a huge impact on the climate...the earth right now has trees which produce oxygen for human survival but they are less in number compared to the people on the planet, each person uses at least 3 trees a day for basic necessities and each person uses fire at least 3 times a day, the amount of carbon dioxide and other gases released from this mere process of using fire takes a toll on the earth. if you are wondering how carbon dioxide has a part in global warming, then, carbon dioxide absorbs heat that would otherwise be lost to space . some of this energy is re emitted to earth, causing additional heating of the planet.
this being the case, humans do take part in global warming and are the main cause of it.
if this example and explanation is not enough, then another example of how a single human can change the climate is: the recent fire throughout California, where 2 new parents were doing a gender reveal with fireworks and "accidentally" set the city on fire and also when a we use a petrol car which burns the fuel to get the car running.