Question

1. compare the hypothesis tested in the miller-urey experiment with subsequent hypotheses about the conditions under which life may have been first formed on earth.

Explanation:

The Miller - Urey experiment hypothesized that life could form from inorganic compounds under early Earth's reducing atmosphere (with methane, ammonia, hydrogen, and water vapor) through electrical discharges (simulating lightning). Subsequent hypotheses suggest that life might have formed in hydrothermal vents (with a different chemical environment, like hydrogen - rich, metal - catalyzed conditions) or on mineral surfaces (providing a template for molecular organization). Another view is that organic compounds could have come from outer space (panspermia), but the Miller - Urey experiment focused on terrestrial synthesis.

Answer:

The Miller - Urey experiment proposed life from inorganic compounds in a reducing atmosphere. Subsequent hypotheses include hydrothermal vents (different chemistry, metal - catalyzed), mineral surfaces (molecular organization template), and panspermia (extraterrestrial origin).