Final answer:
The effects of Earth's rotation include day and night, the Coriolis effect, and the shape of the Earth. If Earth did not rotate, one major obstacle for life would be the lack of a day-night cycle.
Step-by-step explanation:
Effects of Earth's Rotation:
- Day and Night: Earth's rotation causes the alternation between day and night as different parts of the planet are exposed to sunlight.
- Coriolis Effect: The rotation of the Earth influences global wind patterns and ocean currents through the Coriolis effect.
- Shape of the Earth: Earth's rotation causes it to bulge slightly at the equator and flatten at the poles.
Obstacle if Earth did not rotate:
If Earth did not rotate, one major obstacle life would have to overcome is the lack of a day-night cycle. This would lead to extreme temperature differences between the constantly illuminated side and the perpetually dark side of the planet.