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3 years ago

In 3–5 sentences, describe flood mitigation techniques the federal government might use.

Biology

1 answer:

Bad White [126]3 years ago

5 0

Answer:

Several flood mitigation techniques can be used by federal governments. 

Explanation:

Diversion of flood water and its storage is a method that can be used for flood mitigation. Floodwaters can be diverted to canals, reservoirs, floodplains etc.

Thus water can be kept out of inhabited areas. Federal governments can enact legislation to establish floodwater and storage. Restoration of streams and floodplains is another method that can be used to mitigate floods. 

These methods can prevent bank erosion and reduce the severity of floods. Legislation's regarding the restoration can be passed by federal states.

Low impact development and green infrastructure store water and thus helps preventing floods. This is another method to mitigate floods. 

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4) Empress Si-Ling Chi observed _________ in her garden.

emmasim [6.3K]

The answer is: B) silkworms.

“While sitting in her garden she deduced the secret of silk by watching the silkworms. She developed the process to remove the thread from the cocoon and set up silk cultivation farms and the weaving of the new cloth.” (Source: http://4kyws.ua.edu/SI_LING_CHI.html)

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Which of these gymnosperms are known to be important in maintaining the balance of carbon in an ecosystem?

CaHeK987 [17]

The correct answer is: [D]:

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→ " redwood tree forests " .

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Note: Let us consider the other answer choices.

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Choice: [A]: "garden flowering plants" ; is incorrect — since these are not generally considered to be part of a true or traditional "ecosystem" ; and especially since "garden flowering plants" are, in fact, "flowering plants" — which means that they are "angiosperms" — Not "gymnosperms ".

→ Rule out: " Choice: [A] " .

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Choice: [B]: " ferns and liverworts " ; is incorrect — since both ferns — as well as liverworts — are Not "gymnosperms ".

Liverworts are "bryophytes" {which lack true vascular tissue] ; and ferns are "pterophytes" ["seedless vascular plants"].

→ Rule out: " Choice: [B] " .

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Choice: [C]: " mosses and horsetails "; is incorrect ; since both mosses — as well as horsetails — are Not "gymnosperms ". Mosses are "bryophytes" (see aforementioned) ; and horsetails are "non-seed bearing plants" that spread vegetatively [underground; by asexual reproduction — and Not by seed .].

→ Rule out: " Choice: [C] " .

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Choice: [D]: " redwood tree forests " ;

— is the only answer choice provided that is a "gymnosperm".

Furthermore, the "redwood tree" is a conifer (i.e. "coniferous; or, "cone-bearing" plant} that reproduces through seeds spread by "cone") — and all "conifers" are a type of "gymnosperm."

Furthermore, "redwood trees" grow large and tall, and redwood forest communities within an ecosystem; due to there size and presence, are: "known to be important in maintaining the balance of carbon in an ecosystem."

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→ As such, the correct answer is:

__________________________________________________

→ Answer choice: [D]: " redwood tree forests " .

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Hope this helps!

Best wishes to you in your academic endeavors

— and within the "Brainly" community!

__________________________________________________

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