Environmental Science
How do red and blue light differ?

Red light has a higher intensity.
Blue light has a higher speed of propagation.
Red and blue light have different directions of polarization.
The wavelength of red light is longer.

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
During the winter solstice in the Northern Hemisphere:

Astronomical winter begins in the Northern Hemisphere
The noon sun is overhead at 23.5o S latitude
All of these
At middle latitudes in the Northern Hemisphere, this marks the longest night of the year

ANSWER DOWNLOAD EXAMIANS APP