Glacier ice occupied about ____% of Earth's land during the last Ice Age, then began retreating about 17,000 years
ago. Today, glacier ice occupies about ____% of the land surface.
a. 30; 10.
b. 50; 10
c. 73; 50
d. 80; 50
e. 15; 1
a
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Organisms that are prokaryotes are in the domains
A) Plantae and Animalia. B) Eukarya and Archaea. C) Archaea and Plantae. D) Fungi and Bacteria. E) Bacteria and Archaea.
Multiple sclerosis is a result of
A) the absence of myelin on nerve cells. B) excess amounts of myelin on nerve cells. C) an immune system attack on nerve fibers. D) blocking the nodes on Ranvier. E) having excess acetylcholine receptors.
Areas between wind convection cells are characterized by having stable and consistent winds
Indicate whether the statement is true or false
Changes in ________ represent the predominant cause for biological evolution.
A. growth and development B. genetic makeup C. energy D. reproduction E. homeostasis