Which statement is false?
a. A molecule is made of at least two atoms.
b. Compounds are made of elements.
c. Two atoms of oxygen make a molecule of
oxygen.
d. Proportions of elements in compounds vary
according to their source in nature.
e. Elements are found in compounds and
molecules
D
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Which of the following branches of biology examines the form and variety of organisms in their
natural environment?
a. Taxonomy b. Natural history c. Comparative morphology
d. Biogeography e. Geology
The part of the brain that controls signal flow
between the cerebellum and integrating centers in the forebrain is the a. cerebrum. b. pons. c. cerebellum. d. fissure of Rolando. e. hypothalamus.
Which taxa contain the largest number of known species?
A) coleoptera B) plants (embryophytes) C) fungi D) crustaceans
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.