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Q:

Who was discovered Oxygen?

A) John Dalton B) Thomas Moore
C) Lavoisier D) Joseph Priestley
 
Answer & Explanation Answer: D) Joseph Priestley

Explanation:

Joseph Priestley and Carl Wilhelm Scheele both independently discovered oxygen in the year 1774, but Priestly is usually given credit for the discovery.

Who_was_discovered_Oxygen1561116136.jpg image

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Filed Under: General Science
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Q:

You can have me but cannot hold me; Gain me and quickly lose me. If treated with care I can be great, And if betrayed I will break.

What am I?

Answer

TRUST.

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Q:

Which of the following is an example of secondary succession?

A) sedimentation on the bottom of drained lake B) landscaping at a golf course
C) reforestation of the cedar forests of the northwest D) scrub grasses growing on a newly exposed dune
 
Answer & Explanation Answer: C) reforestation of the cedar forests of the northwest

Explanation:

Secondary succession means in an ecosystem renewal of itself after all or a portion has been destroyed.

 

After a forest fire, the whole forest had destroyed but after that again renewal of that forest is also an example of secondary succession.

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Filed Under: General Science
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Q:

Which planet do most known extrasolar planets most resemble?

A) Jupiter B) Neptune
C) Earth D) Venus
 
Answer & Explanation Answer: A) Jupiter

Explanation:

Most of the known extrasolar planets resembles the planet Jupiter in the solar system.

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Q:

The word length of a computer is measured in

A) centimeters B) millimeters
C) bytes D) bits
 
Answer & Explanation Answer: D) bits

Explanation:
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Filed Under: Computer
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Q:

Instrument for measuring work performed is called _________.

A) Eudiometer B) Anemometer
C) Hyetometer D) Ergometer
 
Answer & Explanation Answer: D) Ergometer

Explanation:
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Filed Under: Physics
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Q:

The HIV retrovirus is particularly deadly because

A) I can become AIDS shortly afte being contracted B) It attacks the body immune system
C) Treatments can be dangerous for patients D) Its hard to diagnose accurately
 
Answer & Explanation Answer: B) It attacks the body immune system

Explanation:

HIV is a virus that damages the immune system. HIV is a lifelong condition, and without treatment, a person with HIV can develop AIDS.

The_HIV_retrovirus_is_particularly_deadly_because1563452540.jpg image

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Filed Under: Biology
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Q:

Cellulose is a major component of the

A) Pythium B) Pseudomonas
C) Xanthomonas D) Saccharomyces
 
Answer & Explanation Answer: A) Pythium

Explanation:
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Filed Under: Biology
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