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Alex73 [517]
3 years ago
9

The research in biosecurity involves the whole food chain as researchers need to understand how biological agents might be intro

duced into not only human food, but also into animal food. T or F
Biology
1 answer:
ki77a [65]3 years ago
7 0
This statement is true.
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The nitrogen cycle is most directly dependent upon-
vovangra [49]

Answer:

B) Nitrogen-fixing bacteria and lightning

Explanation:

Nitrogen cycle is the natural process in which atmospheric nitrogen is converted into nitrite and nitrate with the help of bacteria.

Nitrogen cycle is directly dependent on nitrogen-fixing bacteria and lightning.

As bacteria are responsible for most of the chemical conversion in the nitrogen cycle such as nitrogen fixation (first step) is done by soil bacteria (Cyanobacteria) that form ammonia, which is toxic to plants; nitrification in which ammonia is converted into nitrites and nitrates with the help of Nitrobacter and denitrification bacteria involve Pseudomonas, and Achromobacter which convert nitrite and nitrate into nitrogen.

The lightning breaks nitrogen molecules and allow  it to combine with oxygen in atmosphere which further dissolve in rain and form nitrates.

Hence, the nitrogen cycle is most directly dependent upon nitrogen-fixing bacteria and lightning and the correct option is B.

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3 years ago
The first successful treatment for bipolar disorder, and still the most common one, is lithium salts.
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True. That is the answer. 
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A skeletal muscle is described by all of the following except: question 2 options: voluntary attached to a bone having an origin
Oduvanchick [21]
The skeletal muscles are considered voluntary muscles and are mostly located in all parts of the human body. Therefore, these are the muscles that are attached to the bones and have an origin but are NOT highly branched. The skeletal muscles are the UNBRANCHED ones whereas, it is the cardiac muscles that are considered branched.
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By studying pea plants, Mendel concluded that traits of all organisms are passed from parents to offspring. This passing of trai
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Heredity

Explanation:

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Whatd did she discover?? it doesnt make sense
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