a) Explain your understanding of Greenhouse gas emissions in Scope 1 by providing an example? b) Explain your understanding of Greenhouse gas emissions in Scope 2 by providing an example? c) Explain your understanding of Greenhouse gas emissions in Scope 3 by providing an example? d) Which scope of greenhouse gas emissions is difficult to measure and report? State your reasons as to why you make that conclusion? give me 50 words answer for each questions