Which of the following is true regarding the polar front jet stream Group of answer choices a. it sometimes requires airlines to allot more time traveling from the east to the west b. it controls the movement of low pressure systems in North America c. it is the boundary between cold polar air in the north and warm air to the south d. all of the above are true

Why are fossils of organism's from the phanerozoic eon much more likely to be found than fossils of organisms from any other eon? a. more organisms present during the phanerozoic eon had soft body parts. b. organisms present during the phanerozoic eon were all microscopic. c. more organisms present during the phanerozoic eon had hard body parts. d. organisms present during the phanerozoic eon are the most ancient life forms.

How does the bare soil surface type affect the amount of runoff

Triangle with the the sides 72 and 75 and x. also other trsingle withsides 24 25 and 7. what is the value of x.