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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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Organisms that do not depend on oxygen for growth are ____.
Organisms that do not depend on oxygen for growth are ____.
Organisms that do not depend on oxygen for growth are ____.
  a. eukaryotic
  b. abiogenic
  c. abyssal
  d. prokaryotic
  e. anaerobic
applegatedogs   29   1 Reply
6 years ago
What is the metabolic process in which organic molecules are synthesized from water and carbon ...
What is the metabolic process in which organic molecules are synthesized from water and carbon ...
What is the metabolic process in which organic molecules are synthesized from water and carbon dioxide (CO2),
  using radiant energy of the sun captured by chlorophyll-containing cells?
  a. sexual reproduction
  b. p
potato55   31   1 Reply
6 years ago
What is the primary component of Earths current atmosphere?
What is the primary component of Earths current atmosphere?
What is the primary component of Earths current atmosphere?
  a. carbon dioxide
  b. oxygen
  c. water vapor
  d. nitrogen
  e. argon
sunil1285   54   1 Reply
6 years ago
You are hiking in eastern Canada over a surface composed of very old igneous and metamorphic rocks. ...
You are hiking in eastern Canada over a surface composed of very old igneous and metamorphic rocks. ...
You are hiking in eastern Canada over a surface composed of very old igneous and metamorphic rocks. In geologic
  terms, you are most likely walking across a(n) ____.
  a. continental shelf
  b. platform
  c
panda_buhr   38   1 Reply
6 years ago
How are ocean and continental crust different?
How are ocean and continental crust different?
How are ocean and continental crust different?
  a. Continental crust is basalt, whereas oceanic crust is granite.
  b. Continental crust is formed by volcanism, whereas oceanic crust is not.
  c. Continental crust is
sunil1285   93   1 Reply
6 years ago
Mound-like structures that represent the remains of photosynthesizing cyanobacteria are ____.
Mound-like structures that represent the remains of photosynthesizing cyanobacteria are ____.
Mound-like structures that represent the remains of photosynthesizing cyanobacteria are ____.
  a. greenstone belts
  b. stromatolites
  c. back-arc basins
  d. cratons
  e. black smokers
alexisangelique   119   1 Reply
6 years ago
Oxygen accumulated in the atmosphere via ____.
Oxygen accumulated in the atmosphere via ____.
Oxygen accumulated in the atmosphere via ____.
  a. processes in the ozone hole
  b. nucleosynthesis
  c. meteorite bombardments
  d. differentiation
  e. photosynthesis
meganchambers8   98   1 Reply
6 years ago
From where does the name greenstone in greenstone belts originate?
From where does the name greenstone in greenstone belts originate?
From where does the name greenstone in greenstone belts originate?
  a. Greenstone belts formed on land.
  b. Many of the minerals in greenstone belts are green.
  c. Greenstone belts contain the earliest algal fossil
meganchambers8   61   1 Reply
6 years ago
The process by which life formed from nonliving matter is known as ____.
The process by which life formed from nonliving matter is known as ____.
The process by which life formed from nonliving matter is known as ____.
  a. outgassing
  b. photosynthesis
  c. continental accretion
  d. abiogenesis
  e. anaerobic evolution
Madam   48   1 Reply
6 years ago
The early atmosphere of Earth probably did not contain ____.
The early atmosphere of Earth probably did not contain ____.
The early atmosphere of Earth probably did not contain ____.
  a. nitrogen
  b. oxygen
  c. carbon dioxide
  d. carbon monoxide
  e. sulfur dioxide
Coco   83   1 Reply
6 years ago
The accumulation of an early atmosphere by the release of gases from Earths interior during ...
The accumulation of an early atmosphere by the release of gases from Earths interior during ...
The accumulation of an early atmosphere by the release of gases from Earths interior during volcanism is known as
  ____.
  a. photosynthesis
  b. outgassing
  c. abiogenesis
  d. continental accre
Leikakei113   70   1 Reply
6 years ago
When it first formed, the Sun was 75 times more luminous than it is now.
When it first formed, the Sun was 75 times more luminous than it is now.
When it first formed, the Sun was 75 times more luminous than it is now.
  a. True
  b. False
applegatedogs   35   1 Reply
6 years ago
Ultramafic lava flows are significant in the Archean rock record because they indicate that Earth ...
Ultramafic lava flows are significant in the Archean rock record because they indicate that Earth ...
Ultramafic lava flows are significant in the Archean rock record because they indicate that Earth was 90 percent
  molten.
  a. True
  b. False
Raider49   33   1 Reply
6 years ago
Despite their differences, the terrestrial planets have similar evolutionary trends.
Despite their differences, the terrestrial planets have similar evolutionary trends.
Despite their differences, the terrestrial planets have similar evolutionary trends.
  a. True
  b. False
jessiecraane   25   1 Reply
6 years ago
Both the intracontinental rift and back-arc basin model are based on volcanism associated with ...
Both the intracontinental rift and back-arc basin model are based on volcanism associated with ...
Both the intracontinental rift and back-arc basin model are based on volcanism associated with mantle plumes.
  a. True
  b. False
jaypatel432   15   1 Reply
6 years ago
The high Earth temperatures in the Archean probably played a role in the rapid rate of plate motion. ...
The high Earth temperatures in the Archean probably played a role in the rapid rate of plate motion. ...
The high Earth temperatures in the Archean probably played a role in the rapid rate of plate motion.
  a. True
  b. False
Raider49   61   1 Reply
6 years ago
Platforms and cratons make up continental shields.
Platforms and cratons make up continental shields.
Platforms and cratons make up continental shields.
  a. True
  b. False
keelyhawkins   72   1 Reply
6 years ago
Greenstone belts are dominated by volcanic rocks in the lower and middle parts, and sedimentary ...
Greenstone belts are dominated by volcanic rocks in the lower and middle parts, and sedimentary ...
Greenstone belts are dominated by volcanic rocks in the lower and middle parts, and sedimentary rocks in the upper
  part.
  a. True
  b. False
Madam   35   1 Reply
6 years ago
Precambrian shield areas have been tectonically active since the Phanerozoic.
Precambrian shield areas have been tectonically active since the Phanerozoic.
Precambrian shield areas have been tectonically active since the Phanerozoic.
  a. True
  b. False
Brapbrap   70   1 Reply
6 years ago
The first supercontinent present by Proterozoic time was Vaalbara.
The first supercontinent present by Proterozoic time was Vaalbara.
The first supercontinent present by Proterozoic time was Vaalbara.
  a. True
  b. False
sopmit   30   1 Reply
6 years ago
Komatiites are common from the Archean eon, although none are produced in modern tectonic ...
Komatiites are common from the Archean eon, although none are produced in modern tectonic ...
Komatiites are common from the Archean eon, although none are produced in modern tectonic environments.
  a. True
  b. False
thebeagle96   596   1 Reply
6 years ago
Detrital zircon from sedimentary rocks found in Australia yields an age of 4.4 billion years, which ...
Detrital zircon from sedimentary rocks found in Australia yields an age of 4.4 billion years, which ...
Detrital zircon from sedimentary rocks found in Australia yields an age of 4.4 billion years, which indicates that rocks
  formed on Earth at least 4.4 billion years ago.
  a. True
  b. False
jessiecraane   30   1 Reply
6 years ago
The Precambrian represents approximately 88 percent of geologic time.
The Precambrian represents approximately 88 percent of geologic time.
The Precambrian represents approximately 88 percent of geologic time.
  a. True
  b. False
luciaf99   38   1 Reply
6 years ago
Continents consist of the portion of land above sea level only.
Continents consist of the portion of land above sea level only.
Continents consist of the portion of land above sea level only.
  a. True
  b. False
lindseyb1220   45   1 Reply
6 years ago
Over time, Earths rotation rate has slightly increased.
Over time, Earths rotation rate has slightly increased.
Over time, Earths rotation rate has slightly increased.
  a. True
  b. False
Raider49   21   1 Reply
6 years ago
Since its formation, the Moon has slowly been moving away from Earth.
Since its formation, the Moon has slowly been moving away from Earth.
Since its formation, the Moon has slowly been moving away from Earth.
  a. True
  b. False
sopmit   49   1 Reply
6 years ago
Autotrophs make their own food.
Autotrophs make their own food.
Autotrophs make their own food.
  a. True
  b. False
salsathief   25   1 Reply
6 years ago
Earth was a hot, barren, waterless planet during the Archean eon.
Earth was a hot, barren, waterless planet during the Archean eon.
Earth was a hot, barren, waterless planet during the Archean eon.
  a. True
  b. False
joewalcott24   79   1 Reply
6 years ago
Submarine hydrothermal vents commonly are found near mid-oceanic ridges where seafloor spreading ...
Submarine hydrothermal vents commonly are found near mid-oceanic ridges where seafloor spreading ...
Submarine hydrothermal vents commonly are found near mid-oceanic ridges where seafloor spreading occurs.
  a. True
  b. False
yxc47   66   1 Reply
6 years ago
Deoxyribonucleic acid (DNA) is an example of a polymer.
Deoxyribonucleic acid (DNA) is an example of a polymer.
Deoxyribonucleic acid (DNA) is an example of a polymer.
  a. True
  b. False
bgzhoumi   63   1 Reply
6 years ago
Earths early atmosphere was very rich in oxygen (O2).
Earths early atmosphere was very rich in oxygen (O2).
Earths early atmosphere was very rich in oxygen (O2).
  a. True
  b. False
apich   45   1 Reply
6 years ago
The Moon formed after a large object collided with Earth.
The Moon formed after a large object collided with Earth.
The Moon formed after a large object collided with Earth.
  a. True
  b. False
Johnni   40   1 Reply
6 years ago
Precambrian time are subdivided based on numerical dates rather than relative dating.
Precambrian time are subdivided based on numerical dates rather than relative dating.
Precambrian time are subdivided based on numerical dates rather than relative dating.
  a. True
  b. False
panda_buhr   44   1 Reply
6 years ago
What role does the process of mass extinction play in the evolution of life?
What role does the process of mass extinction play in the evolution of life?
What role does the process of mass extinction play in the evolution of life? What will be an ideal response?
keelyhawkins   114   1 Reply
6 years ago
Discuss biologists definition of species. What does this definition imply? Give an example of a ...
Discuss biologists definition of species. What does this definition imply? Give an example of a ...
Discuss biologists definition of species. What does this definition imply? Give an example of a species and discuss
  binomial species names. What will be an ideal response?
cristinaloayza   72   1 Reply
6 years ago
Why might an organism such as Lingula show little evidence for change over great amounts of geologic ...
Why might an organism such as Lingula show little evidence for change over great amounts of geologic ...
Why might an organism such as Lingula show little evidence for change over great amounts of geologic time? What
  are these types of organisms called? What will be an ideal response?
salsathief   43   1 Reply
6 years ago
Discuss how the concept of punctuated equilibrium is compatible with the fossil record. How does ...
Discuss how the concept of punctuated equilibrium is compatible with the fossil record. How does ...
Discuss how the concept of punctuated equilibrium is compatible with the fossil record. How does this concept adapt
  Darwins original concepts of natural selection and evolution to agree more closely with what we see in nature? What wil
meganchambers8   38   1 Reply
6 years ago
Using the Darwin-Wallace mechanism of natural selection, describe how the long necks of giraffes ...
Using the Darwin-Wallace mechanism of natural selection, describe how the long necks of giraffes ...
Using the Darwin-Wallace mechanism of natural selection, describe how the long necks of giraffes evolved. What will be an ideal response?
bgzhoumi   51   1 Reply
6 years ago
Explain how Darwins observations during his 5-year voyage on the Beagle led him to change his mind ...
Explain how Darwins observations during his 5-year voyage on the Beagle led him to change his mind ...
Explain how Darwins observations during his 5-year voyage on the Beagle led him to change his mind about the
  fixity of species. What will be an ideal response?
panda_buhr   24   1 Reply
6 years ago
____________________ illustrate the relationships among members in a group of organisms, including ...
____________________ illustrate the relationships among members in a group of organisms, including ...
____________________ illustrate the relationships among members in a group of organisms, including the groups
  most recent common ancestor. Fill in the blank(s) with the appropriate word(s).
sunil1285   29   1 Reply
6 years ago
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