The higher the ratio of oxygen-18 to oxygen-16 in the shells of organisms that lived in the sea during the geologic past, the ____ the climate at that time
A) colder
B) warmer
C) wetter
D) drier
A
Environmental & Atmospheric Sciences
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How much of the world's water is in glaciers?
a. ~1% b. ~2% c. ~5% d. ~10%
Environmental & Atmospheric Sciences
The system responsible for defense against disease and harmful substances is the
A. circulatory system. B. endocrine system. C. immune system. D. excretory system. E. reproductive system.
Environmental & Atmospheric Sciences
The Antler orogeny that occurred in the Cordilleran mobile belt was caused by ____________________
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences
We would expect that soil leaching would be most severe in regions where
A) there is little rainfall and no irrigation of crops. B) irrigation is applied to fields on hillsides. C) mollisols are abundant and farmers rarely plow. D) cattle are grazed and natural grasses cover the land.
Environmental & Atmospheric Sciences