Why does sweating cool your body?
A) The water in sweat, as it is secreted from skin glands, is cooler than your body temperature.
B) Heat energy from your skin is used to evaporate the water in the sweat.
C) Water in sweat contains hydrogen bonds that react with skin cells and removes excess heat from the skin.
D) Sweat contains a combination of chemicals that react with salt on the skin to create a heat-absorbing substance.
B
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Australopithecus garhi lived about ________ million years ago.
A) 1.0 B) 2.5 C) 4.0 D) 5.0
Hemophilia A is an example of a(n) _____ disease and is characterized by a lack of blood-clotting factor ____
a. X-linked; VIII b. sex-linked recessive; V c. autosomal dominant; VIII d. sex-linked dominant; V e. autosomal recessive; VIII
Why can't many molecules, like sugar and proteins, pass freely across the lipid bilayer of plasma membranes?
What will be an ideal response?
All organisms that are derived from a single common ancestor make up a clade
Indicate whether the statement is true or false