Final answer:
The two greenhouse gases measured on the jet plane with Harrison Ford would likely be carbon dioxide (CO₂) and methane (CH₄), which are significant contributors to the greenhouse effect and global warming.
Step-by-step explanation:
After the beginning of the film, Harrison Ford is on a jet plane with scientists taking measurements of two greenhouse gases. The two greenhouse gases that are commonly measured and are known to trap heat within Earth's atmosphere are carbon dioxide (CO₂) and methane (CH₄). Since the Industrial Revolution, the burning of fossil fuels and large-scale deforestation have significantly increased the levels of these gases in the atmosphere, contributing to global warming and climate change. These gases trap heat similarly to the glass panels of a greenhouse, allowing short-wave solar radiation to enter but preventing long-wave heat radiation from escaping into space, thereby warming the planet.