The most commonly used natural material in sanitary landfill design is ________
Fill in the blank(s) with correct word
clay
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The force that acts on a planet orbiting the Sun is a
A. centripetal force. B. gravitational force. C. both of these D. none of the above
Transgenic plants are different from conventional hybrid plants produced hundreds of years ago in that transgenic plants may ________
A) contain genes from animals or bacteria B) have new traits not found in their ancestral species C) contain genetic material from genetically dissimilar parents D) not be used as sources of human food
The process by which government-owned assets are transferred to private ownership and management is called ________
Fill in the blank(s) with correct word
The fish in the lake at the local park are dying, and a professor from the local college comes to investigate. First she measures the levels of dissolved oxygen because she wants to check for ________
A) aquatic biodiversity B) the presence of bacteria C) the influence of acid precipitation D) the presence of heavy metals E) hypoxia