Take the quiz.
"Your Total Score is 87.5%."
I've been on a Biology kick lately: Matt Ridley, The Agile Gene and Genome, M. J. Benton, When Life Nearly Died (the Permian mass extinction). I have two in the air: Stringer and McKie, African Exodus (human evolution) and Marc Van De Mieroop, A History of the Ancient Near East (c.a. 3000-323 bc). Next up: review basic Analytic Geometry (conic sections) and Calculus. Then I'll have time to review basic mechanics and thermodynamics. Why does the equilibrium temperature of a body (such as the Earth) in orbit around the Sun depend on anything other than residual kinetic energy of formation, heat from fission in the interior, solar output, and the radius of the Earth's orbit? I have questions but no answers. How can "greenhouse gasses" make any difference? The experts say so, so I'll believe, but, as the Marquis De Sade said "It is impossible for a man to believe in something he does not understand" (from memory, so it's not exact).
C'mon; my last Physics class was 40 years ago.