In the northern hemisphere, the is on march 20th or 21st. question 19 options: vernal equinox summer solstice autumnal equinox winter solstice

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

What is the climate of the himalayas? a. cold and wet c. cold and dry b. hot and humid d. hot and dry