1.3 [35] ACTIVITY 2 2.1. In THREE facts each, explain the following: 2.1.1 Natural radiation (3x2)(6) 2.1.2. Artificial/ man-made radiation (3x2)(6) 2.2. DiscussONE way in which global warming aggravates the effect of radiation PROJECT 2021 GRADE 11 LIFE ORIENTATION NORTHWEST PROVINCE​

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.