Final answer:
65 million years ago, the supercontinent Pangaea had started to break apart and the continents were taking on their current shapes. The Atlantic Ocean was widening, while the Pacific Ocean was shrinking. Land bridges formed between continents, allowing for migration of land animals.
Step-by-step explanation:
65 million years ago, the state of the continents and ocean was significantly different than it is today. During this time period, the supercontinent Pangaea had already started to break apart, and the continents were beginning to take on their current shapes.
The Atlantic Ocean was widening due to the movement of tectonic plates, while the Pacific Ocean was shrinking. Land bridges formed between some continents, allowing for the migration of land animals. The climate was also different, with temperatures being extreme and the climate being generally dry.