What is the main reason for a large asteroid to be catastrophic for life on earth? (hint: why couldn’t the dinosaurs survive the mass extinction 66 million years ago?) select one:
a. a powerful explosion after impact
b. disruption of food chain due to lack of photosynthesis
c. global cooling due to dust in the atmosphere
d. strong collision due to its large kinetic energy
e. hazardous radioactive elements from the asteroid?