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Chapter 56 Mastering Biology Questions and Answers Graded A+ $14.49   Add to cart

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Chapter 56 Mastering Biology Questions and Answers Graded A+

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  • Mastering Biology
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  • Mastering Biology

Chapter 56 Mastering Biology

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  • October 25, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Mastering Biology
  • Mastering Biology
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Chapter 56 Mastering Biology

From 1930 to 1939 fire ants spread inland about 60 miles from their point of introduction
in Mobile, Alabama. What was the cause of their spread over this distance? - answer a
natural spread

From 1940 to 1970 fire ants spread through many southern states, sometimes at a rate
of 100 miles in a year. What was the cause of their spread over this distance? - answer
being transported along with plants and soil

In 1958 federal law restricted the movement of soil and plants from areas where fire
ants were established. Why was this law unsuccessful in stopping the spread of fire ant
colonies? - answer People were unaware of the federal law and, when they moved,
transported plants bearing fire ant colonies; a single mated queen can be transported
without being noticed; and many states thought to be free of fire ant colonies already
had them. (the longest answer)

Techniques used, or are being considered for use, in controlling the spread of fire ants
include _____. - answer setting baits that kill the queen when they are carried back to
the nest, applying chemical powders that kill the colony, introducing a protist to infect
the fire ant queen and her eggs, and introducing a fly that lays eggs in fire ants so that
the eggs will hatch into larvae that eat their way into the ants' heads, which will then fall
off (the longest answer)

Which of the following organisms was/were introduced by humans into the United
States or its territories? - answerAll of the choices are correct

The single greatest current threat to biodiversity is _____. - answerhabitat destruction

The estimated density or number of individuals needed for a species to maintain or
increase its numbers in a region is the _____. - answerminimum viable population
(MVP)

The number of habitat types __________ when ecosystem diversity increases -
answerincreases

Low genetic diversity within a species _____________ the likelihood that the species
may go instinct - answerincreases

A human activity such as draining a wetland _______________ ecosystem diversity -
answerdescreases

extinction ____________ species diversity - answerdecreases

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