Astronomy

Explain how interferometry works.

Explain how interferometry works.

Explain how interferometry works.

kady   172   1 Reply

bolbol

Evolution can occur only if there is some random variation.

Evolution can occur only if there is some random variation.

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Evolution can occur only if there is some random variation.

▸ true

▸ false[/ht

pattytcakes   152   1 Reply

dm408

____________ is often referred to as the "universal solvent."

____________ is often referred to as the "universal solvent."

____________ is often referred to as the "universal solvent."

mickied   139   1 Reply

DNA_Helicase

Why do some scientists think that the idea of the habitable zone as a fixed distance range from a ...

Why do some scientists think that the idea of the habitable zone as a fixed distance range from a ...

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Why do some scientists think that the idea of the habitable zone as a fixed distance

aznhermit101   137   1 Reply

toastercat

Why do scientists no longer think that complex organic molecules must have first formed in shallow pools?

Why do scientists no longer think that complex organic molecules must have first formed in shallow pools?

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Why do scientists no longer think that complex organic molecules must have first for

Sammyjoe1105   185   1 Reply

jordankites45

Why do scientists consider it to be very unlikely that UFO reports are due to visitors from another ...

Why do scientists consider it to be very unlikely that UFO reports are due to visitors from another ...

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Why do scientists consider it to be very unlikely that UFO reports are due to visito

sperry263   128   1 Reply

dm408

Who is the intended recipient of the Arecibo message?

Who is the intended recipient of the Arecibo message?

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Who is the intended recipient of the Arecibo message?

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badd99   104   1 Reply

nursethomas

Which of the following star systems would be the best place to search for planets that could host life?

Which of the following star systems would be the best place to search for planets that could host life?

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Which of the following star systems would be the best place to search for planets th

SeaBass2013   121   1 Reply

jaimielavie

Which of the following lists events in the order that they occurred?

Which of the following lists events in the order that they occurred?

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Which of the following lists events in the order that they occurred?

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arunasingh5   103   1 Reply

relisabeth

Which of the following limits the number of technological civilizations in our galaxy?

Which of the following limits the number of technological civilizations in our galaxy?

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Which of the following limits the number of technological civilizations in our galax

karotop02   110   1 Reply

sherry94

Which of the following is used by all known forms of life on Earth as a medium for chemical reactions?

Which of the following is used by all known forms of life on Earth as a medium for chemical reactions?

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Which of the following is used by all known forms of life on Earth as a medium for c

Cell6   101   1 Reply

avi420

Which of the following is a segment of a chromosome that controls a specific function?

Which of the following is a segment of a chromosome that controls a specific function?

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Which of the following is a segment of a chromosome that controls a specific functio

marcsleiman   97   1 Reply

adandarooza

Which of the following best describes a mutation?

Which of the following best describes a mutation?

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Which of the following best describes a mutation?

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citycyborg   101   1 Reply

dreamnluv

Which of the choices below sorts the solar system locations from most-to-least likely for life to develop?

Which of the choices below sorts the solar system locations from most-to-least likely for life to develop?

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Which of the choices below sorts the solar system locations from most-to-least likel

itshammertime   199   1 Reply

boomers1234

When did the first single-celled organisms evolve on Earth?

When did the first single-celled organisms evolve on Earth?

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When did the first single-celled organisms evolve on Earth?

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Coolguy80   91   1 Reply

gamblawc

When considering the possible number of technologically advanced civilizations in our galaxy, which ...

When considering the possible number of technologically advanced civilizations in our galaxy, which ...

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When considering the possible number of technologically advanced civilizations in ou

JSmith1   109   1 Reply

durandal

What wavelengths are used in current searches for extraterrestrial intelligence by radio telescopes?

What wavelengths are used in current searches for extraterrestrial intelligence by radio telescopes?

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What wavelengths are used in current searches for extraterrestrial intelligence by r

jadelga3   92   1 Reply

sportzchik15

What was happening elsewhere in the universe when the first complex life appeared on Earth?

What was happening elsewhere in the universe when the first complex life appeared on Earth?

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What was happening elsewhere in the universe when the first complex life appeared on

tootsiebrowny   88   1 Reply

crusherpsg

What is the most important reason why scientists do NOT believe Earth has ever been visited by alien ...

What is the most important reason why scientists do NOT believe Earth has ever been visited by alien ...

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What is the most important reason why scientists do NOT believe Earth has ever been

sarasmith06   118   1 Reply

nalsaidy

What is "the habitable zone"?

What is "the habitable zone"?

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What is "the habitable zone"?

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nurse15   86   1 Reply

teamroket

What happens to a star's habitable zone as the star ages?

What happens to a star's habitable zone as the star ages?

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What happens to a star's habitable zone as the star ages?

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blakenordgaard   93   1 Reply

brendasants

What does the Drake equation tell us about life in the universe?

What does the Drake equation tell us about life in the universe?

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What does the Drake equation tell us about life in the universe?

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Chocolate_Pie   111   1 Reply

daoneandonly300

What do DNA molecules contain the patterns for?

What do DNA molecules contain the patterns for?

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What do DNA molecules contain the patterns for?

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meghan.binge   90   1 Reply

roman91

What did the Miller-Urey experiment create?

What did the Miller-Urey experiment create?

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What did the Miller-Urey experiment create?

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nitanikollaj   100   1 Reply

sagitario81

What are believed to have been the best places for life to have formed on Earth?

What are believed to have been the best places for life to have formed on Earth?

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What are believed to have been the best places for life to have formed on Earth?

sweetapple718   87   1 Reply

andrewcao90

The first complex life appeared on Earth about 0.5 billion years ago. What period was that?

The first complex life appeared on Earth about 0.5 billion years ago. What period was that?

[html]The first complex life appeared on Earth about 0.5 billion years ago. What period was that?


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nsdq007   104   1 Reply

shanej399

Suppose you wanted to use your radio telescope to search for signals from alien civilizations. Which ...

Suppose you wanted to use your radio telescope to search for signals from alien civilizations. Which ...

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Suppose you wanted to use your radio telescope to search for signals from alien civi

Bpringle2000   128   1 Reply

blf1210

Suppose that SETI researchers discovered a radio signal coming from a star in the direction of the ...

Suppose that SETI researchers discovered a radio signal coming from a star in the direction of the ...

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Suppose that SETI researchers discovered a radio signal coming from a star in the di

hussainizzle   109   1 Reply

inhibitor128

Suppose that a lifeform was discovered on Mars, and all of the different individuals in this ...

Suppose that a lifeform was discovered on Mars, and all of the different individuals in this ...

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Suppose that a lifeform was discovered on Mars, and all of the different individuals

Rosa   96   1 Reply

mouallemj

Presuming that it takes a few billion years for complex life to evolve in a stable environment, what ...

Presuming that it takes a few billion years for complex life to evolve in a stable environment, what ...

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Presuming that it takes a few billion years for complex life to evolve in a stable e

xiaoyu000   136   1 Reply

jaymaster

In the Drake equation, when considering the possible number of technologically advanced ...

In the Drake equation, when considering the possible number of technologically advanced ...

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In the Drake equation, when considering the possible number of technologically advan

texasmade2550   95   1 Reply

lizwalker

If you uncoiled and stretched out all of the DNA molecules in a typical human, what would their ...

If you uncoiled and stretched out all of the DNA molecules in a typical human, what would their ...

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If you uncoiled and stretched out all of the DNA molecules in a typical human, what

mb83   95   1 Reply

micp3537

How is DNA important to a cell?

How is DNA important to a cell?

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How is DNA important to a cell?

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tw1gg   105   1 Reply

lizwalker

How do we usually refer to deoxyribonucleic acid?

How do we usually refer to deoxyribonucleic acid?

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How do we usually refer to deoxyribonucleic acid?

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Bpringle2000   101   1 Reply

studytime

DNA is coiled into a tight spiral and makes up the genetic material in a cell. What is that material ...

DNA is coiled into a tight spiral and makes up the genetic material in a cell. What is that material ...

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DNA is coiled into a tight spiral and makes up the genetic material in a cell. What

vanessavz   122   1 Reply

egidrarc

What is ALH 84001, and why are most scientists skeptical about the extraordinary claims that have ...

What is ALH 84001, and why are most scientists skeptical about the extraordinary claims that have ...

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What is ALH 84001, and why are most scientists skeptical about the extraordinary cla

killerbear900   111   1 Reply

jewelzzP

What information would you include in a signal to be sent to the possible inhabitants of TRAPPIST-1?

What information would you include in a signal to be sent to the possible inhabitants of TRAPPIST-1?

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What information would you include in a signal to be sent to the possible inhabitant

arpylzr75   99   1 Reply

lizwalker

What did Butler mean when he said, "The chicken is the egg's way of making another egg"?

What did Butler mean when he said, "The chicken is the egg's way of making another egg"?

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What did Butler mean when he said, "The chicken is the egg's way of making another e

lpn27   100   1 Reply

gamblawc

What are the key properties of living things?

What are the key properties of living things?

What are the key properties of living things?

yosie   97   1 Reply

livewelldreambi

In searching for other life in the universe, why does it make sense to look for planets with liquid water?

In searching for other life in the universe, why does it make sense to look for planets with liquid water?

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In searching for other life in the universe, why does it make sense to look for plan

Krispylynn33   188   1 Reply

djbo89