You inhale air through thse abt 20 times a minute

Which position represents spring in the southern hemisphere? a) b) c) d)

Define dew point. i am writing this part to be able to ask the question

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this