Question

9 multiple choice 1 point which of the following do most scientist say caused the extinction of the dinosaurs? land masses colliding, forming a supercontinent. increased photosynthesis causing excessive oxygen in earths atmosphere. glaciers melting causing a massive sea level rise in a short period of time. asteroid impacting the earth.

Explanation:

Most scientists support the theory that a large asteroid impact (specifically the Chicxulub crater event) caused the extinction of dinosaurs. The other options: land masses forming a supercontinent (Pangaea) occurred much earlier, increased oxygen from photosynthesis is not linked to dinosaur extinction, and rapid glacial melting - sea level rise does not align with the dominant extinction theory.

Answer:

D. Asteroid impacting the Earth. (Note: Assuming the last option is labeled D; if the original labels were different, adjust the identifier. The text of the correct option is "Asteroid impacting the Earth".)