Rational numbers: {p/q | p and q are integers, and q =0}: Real numbers: {x | x is a number that can be written as a decimal}. Irrational numbers: {x | x is a real number andx cannot be written as a quotient of integers.}. Deï¬nitions: â¢ The number of elements in a set is called the cardinal number,orcardinality,oftheset. The symbol n(A), which is read ân of A,â represents the cardinal number of the setA.
The Intergovernmental Panel on Climate Change (IPCC) reported in 2014 that scientists were more than 95% certain that global warming is mostly being caused by human (anthropogenic) activities, mainly increasing concentrations of greenhouse gases such as methane and carbon dioxide (CO2).
Global Warming Solutions. Earthâs temperature is rising day by day and there is no single solution to solve global warming which has already created havoc in todayâs world. Threats of global warming include: rising sea level, lost endangered species, climate change and deadly storm events. We have already seen the causes of global warming. The solutions listed below can bring down the carbon emissions up to much extent We are already seeing the effects of global warming around the world as climate change, melting of glaciers, droughts and diseases. The real problem is the pollution produced from industries, vehicles and power plants.