(20 points) plot the diurnal variations of solar zenith angle 02 (in degrees) and the insolation at the surface 1, = is cos during 0: 00-24: 00 (local time) on february 15 at 10°n. note that 0- =90° for night times.

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed