Select all the correct answers. How does the presence of carbon dioxide in the atmosphere help life to flourish on Earth?
by reflecting all solar radiation that falls on Earth
by reflecting UV rays from the Sun back into space
by absorbing an adequate amount of solar radiation
by increasing the thickness of the atmosphere around Earth
by maintaining warm temperatures required for life on Earth

Aaspirin has a density of 1.40 g/cm^3 what is the volume in cubic centimeters of a tablet weighing 320 mg?

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

When balancing a chemical equation: