for loving someone,only words are not enough, some output is necessary to make someone believe that you love them. And people who are loyal and really loves you will surely not regret to sacrifice for you. Sacrificing for your loved one is one of the way to show your intensity of love and care towards them. And all parents for their children do sacrifices and it could be the scarification of their own happiness, ignoring personal interest for their children and many more.
Scientists have established that human-based activities have affected and are affecting a rapid change in the earth's climate as they have brought about massive changes in the global carbon cycles and affected the ecological systems.
Earth is has an ever-changing climate and the variation in the orbit of earth results in natural changes such as seasons, which depend on the duration and intensity of the sunlight.