The evolution of a new species is most like
A) designing a new home and building it.
B) remodeling an old home into a new one.
C) using parts of many junked cars to construct a new one.
D) creating a virtual car on a computer.
B
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How might you tell whether or not your toothpaste contained either calcium carbonate, CaCO3, or baking soda, NaHCO3, without looking at the ingredients label?
A) if the toothpaste bubbles when heated B) if the toothpaste bubbles when added to ammonia, such as window cleaner C) if the toothpaste produces a salt (NaCl) when added to HCl D) if the toothpaste bubbles when added to vinegar
Which is not one of the three main types of sediment grain?
A) clastic B) biogenic C) conglomeratic D) chemical
In an ecosystem with many similar species, we typically find
A) low levels of interspecific competition, mostly for food. B) competitors using different resources to minimize interspecific competition. C) intense interspecific competition mostly for suitable habitats. D) adaptations for battles and intraspecific competition.
In order to institute an integrated pest management program, it is necessary to
A. Burn all fields to eliminate biological elements B. Use large amount of space C. Have large amount of money D. Understand local plants and animals E. Have many different kinds of crops