We depend on plants to get our oxygen. Plants produce glucose which helps them live and grow and we contribute by releasing carbon dioxide. In order to live, we need the oxygen that plants produce by producing glucose. Scientific Facts About Global Warming Many scientists believe that the current warming trend is significant because it has largely been caused by human activities. Earth-orbiting satellites and other technological equipment allow scientists to see and collect various information about our planet's climate. Scientists have studied the information collected and revealed the many changes in our planet and how these changes are affecting our climate, some of them are: • Ice cores taken from Greenland, Antarctica, show that our climate responds to changes in greenhouse gas levels. It also shows that changes happen rapidly (years). • Sea level rise: As of January 2015, global sea level measured 61.91 mm. Sea level rise is caused primarily by two factors related to global warming: added water from melting land ice and the expansion of seawater as it