How did the geologist Charles Lyell influence Darwin?
A) He provided evidence that Earth was really only about 10,000 years old.
B) He suggested that slow, gradual changes shaped the features of Earth.
C) He proposed a theory about how small islands were formed.
D) He charted the currents found off the Pacific coast of South America.
B
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If the cell whose nuclear material is shown in the accompanying figure continues toward completion of mitosis, which of the following events would occur next?
A) cell membrane synthesis B) spindle fiber formation C) nuclear envelope breakdown D) formation of telophase nuclei E) synthesis of chromatids
Where are the sugars formed during photosynthesis?
a. Cell membrane b. Grana c. Stroma d. Cell wall e. Cristae
The highest carbon dioxide concentration will be found in (or at) the
Select one: a. atmosphere. b. trachea. c. alveoli. d. tissue cells. e. blood.
All of the following are examples of chronic diseases EXCEPT
a. cancer. b. diabetes. c. heart disease. d. influenza.