In cities that suffered repeated smallpox outbreaks, the disease killed about _____% of the people it infects
a. 50
b. 33
c. 75
d. 10
b
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Carbon dioxide in the atmosphere absorbs heat energy and emits it in all directions, making it a ____
Fill in the blank with the appropriate word.
If a chromosome in one of your bone cells becomes mutated, you will not pass this mutation on to your children because
A. germ cells cannot undergo mitosis. B. germ cells cannot undergo meiosis. C. somatic cells cannot undergo meiosis. D. somatic cells cannot undergo mitosis. E. germ cells neither undergo mitosis nor meiosis.
Muscular dystrophy _____
a. is a genetic disorder b. is a type of food poisoning c. can be prevented with a vaccine d. is caused by a virus e. both can be prevented with a vaccine and is caused by a virus
In the figure, the decrease of herbs (grasses) and increase in mosses would suggest that the climate in Siberia has become in the past 10,000 years.
A. drier B. wetter C. hotter D. more windy