Which approach is currently proving to be the most promising way of determining how life on Earth originated?
A) studies of Martian meteorites
B) studies of organisms living around deep-sea ocean vents
C) studies of the fossil record
D) laboratory simulations of conditions present on the early Earth
Question 2
Quantum mechanics is
A) a branch of physics that applies on very small scales.
B) the idea that mechanics can be understood only if we first understand quantums.
C) the idea that quantitative methods are needed to understand physics.
D) a branch of physics that deals with the curvature of spacetime.
E) a branch of physics that deals with the properties of gases.
The open ocean is the most extensive biome on earth.
Life's Calendar
Life-cycle of the Sun; sizes are not drawn to scale
Wavelengths that penetrate the earth's atmosphere
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