Which of the following is a fossil?
a. An insect encased in 10-million-year-old tree sap
b. A woolly mammoth frozen in Arctic permafrost for the last 50,000 years
c. Mineral-hardened remains of a whale-like animal found in an Egyptian desert
d. An impression of a plant leaf in a rock
e. All of these could be considered fossils
E
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The substantial reduction of the total population of microorganisms on inanimate objects and the destruction of potential pathogen is called
A. antisepsis. B. sanitization. C. disinfection. D. sterilization.
In all organisms, hereditary information is encoded within __________ molecules
a. DNA b. RNA c. protein d. lipid e. carbohydrate
A(n) closed system does not exchange energy with its surroundings
__________________ Indicate whether the statement is true or false.
Variations in a population are produced by ________
Fill in the blank(s) with correct word