The main source of phosphorous is in:
rocks
plants
water
the atmosphere

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?