Although it is often found in municipal water supplies, to be considered safe, water used for fish culture should not contain any residual
a. carbon dioxide
b. sewage
c. chlorine
d. dissolved oxygen
Answer: c. chlorine
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Environmental Science
- Any practice that removes pest's breeding or overwintering sites by removing crop leaves and stems, destroying alternate hosts, or pruning infested plant parts is known as
- Environmental contamination by agrichemicals can be decreased through several management practices, including
- Surveys have shown that more than _________ percent of U.S. counties have potential groundwater contamination from agrichemicals.
- The success of insects in terms of numbers and species is attributed to several characteristics, including their anatomy, development diversity, and
- Perennial weeds are capable of reproducing vegetatively by using
- The control method that makes use of mature insects that have been exposed to radiation to cause sterility is called
- An organism with six legs and three body segments is
- Which of the following is not a factor involved with the disease triangle
- Insects are beneficial for which of the following reasons
- Noxious weeds are often spread when seeds become airborne or
- Weeds can be considered undesirable for which of the following reasons
- Which one of the following classes of pests would be killed by rodenticide
- Which one of the following classes of pests would be killed by a nematicide
- Which one of the following classes of pests would be killed by an acaricide
- Which one of the following classes of pests would be killed by a fungicide
- Damage by pests to agricultural crops in the U.S. has been estimated to be ____________ of the total crop production potential.
- DDT was banned from use in the U.S> because it was determined that DDT was responsible for interfering with the reproduction of birds by
- The end result of the development and implementation of IPM programs since the 1970's has been to reduce the dependency on chemical use while
- After 1962, heavy reliance on chemical pest management began to be questions as a result of which of the following?
- During the period from 1940 to 1972, the United States moved to a major reliance on chemical pesticides. Alternate control strategies were deemphasized, because
- Before the 1940, pesticide were limited to elements and inorganic compounds such as
- Although neglected in the past, it is now known that no area of U.S. land is more important to wildlife than
- An organism with a low biotic potential
- Organisms that are in immediate danger of extinction are classified as
- Species that cannot adapt their behaviors or their diets to accommodate changes in their environment
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