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dmitriy555 [2]
2 years ago
10

This is school work so please dont take this question down I really need help

Biology
1 answer:
RoseWind [281]2 years ago
7 0

Answer:

first question - 3

second question-4

third question - 3

fourth question - 2

Explanation:

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djverab [1.8K]
The greatest possible latitude is 90 degrees ... 90°N at the north pole, 90°S at the south 
<span>pole, and you can't get any farther from the equator than the poles.  </span>
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2 years ago
Which of these changes in today's world is a product of advances in biology?
podryga [215]
In my mind it is C, because A looks a bit too suspicious too me, because we already had a lot of crops, but now al lot of the things we use are plastic, such as plastic cups, chairs, and tables etc.
My final answer is C.increased use of plastics.

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3 years ago
How would you describe extreme weather?
Tatiana [17]

Answer:

Extreme, or severe weather are used interchangeably to describe weather that causes harm to people and/or property. Types of extreme weather include: Thunderstorm - a rain shower with lightning and thunder. ... Flash flooding - rapid flooding due to heavy amounts of rainfall in a short period of time.

Explanation:

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6 0
2 years ago
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Of the following choices, what is the approximate LD50 of the least toxic substance? 20 mg/kg, 70 mg/kg, or 130 mg/kg
pychu [463]

The approximate LD50 of the least toxic substance will be 130 mg/Kg.

  • The dose necessary to cause the death of 50% of a population under test after a predetermined test period is known as the LD50 value for a drug.
  • Commonly used as a broad indicator of a substance's acute toxicity are LD50 values.
  • Greater toxicity is indicated by a lower LD50. A low LD50 of 500 mg/kg or less implies severe toxicity.
  • Moderate toxicity is indicated by an LD50 of 500 to 1,000 mg/kg. A modest toxicity level of 1,000 to 2,000 mg/kg is indicated.
  • The species is especially vulnerable to the poison if the LD50 is low. The lethal dose (LD50) of a specific poison might change significantly between several animal species.
  • Thus out of all the options, LD50 130 mg/kg will have the lowest toxicity and 20 mg/kg will be the highest.

learn more about LD50 here: brainly.com/question/24845532

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8 0
1 year ago
BabyGrl32 Answer quick pls
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Answer:

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