The formation of continental glaciers over vast areas of North America is most favorable when
Northern Hemisphere summers are __________ and winters are __________.
a. cool, extremely cold
b. cool, mild
c. warm, extremely cold
d. warm, mild
Question 2During a period when the earth's orbital tilt is at a minimum, which would probably not be true?
a. there should be less seasonal variation between summer and winter
b. more snow would probably fall during the winter in polar regions
c. there would be a lesser likelihood of glaciers at high latitudes
d. there would be less seasonal variations at middle latitudes
Formation of additional eyes in Drosophila caused by the abnormal expression of a master control gen
(a) Pronghorn, native grazers of the temperate grasslands of North America.
A Summary of the Star Formation Process
Atom formation
Four Lockheed P-38 Lightning fighters in formation.
Tornado Formation: Supercell Tornado Development