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Question
Which of the following is true of the chemical composition of seawater?A) Eighteen elements account for 75% of the dissolved waters in seawater.
B) Seawater contains dissolved gases, suspended and dissolved organic matter, and many trace elements.
C) Seawater is very heterogeneous, varying across the vast oceans of the world.
D) Samples of ancient seawater suggest a great deal of chemical variation over the Earth's history.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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The key idea behind the scientific method is
A) the use of intuition in testing theories.
B) an appeal to supernatural explanations when natural explanations have not yet been found for a phenomenon.
C) the testing of ideas through controlled observations and experiments.
D) unbridled speculation about the world.
Q:
Which of the following is the most strongly supported by experimental and observational evidence?
A) speculation
B) hypothesis
C) educated guess
D) theory
Q:
Relative to the five fundamental themes of geography, the Cienega de Santa Clara, an ecotourism destination on the Colorado River delta, is best described within which of the five themes?
A) location
B) place
C) human-Earth relationships
D) movement
E) regions
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The main methodology governing geographic inquiry
A) is behavioral analysis.
B) involves spatial analysis.
C) uses chronological organization.
D) is field work.
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"Geography" literally means
A) place memorization.
B) the study of rocks.
C) map making.
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In order to study the planetesimal hypothesis, astronomers study this process in other parts of the Galaxy.
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Earth is closest to the Sun in early January.
Q:
A light-year is an astronomical unit of length equal to approximately 9.5 trillion kilometers.
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The Milky Way is about 100,000 light-years from side to side.
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The Solar System, Sun, and Earth formed about 4.6 billion years ago.
Q:
The longest days of the year in the Southern Hemisphere are experienced during the Northern Hemisphere's
A) Summer solstice.
B) Spring equinox.
C) Winter solstice.
D) earlier than during daylight savings time only.
Q:
Distinguish between active and passive remote sensing, and describe the applications of each.
Q:
The basis for defining the length of a day is the fact that
A) Earth rotates east to west.
B) Earth moves through 365.25 days a year in its orbit about the Sun.
C) Earth rotates on its axis in 24 hours; i.e., it rotates 15 of longitude per hour.
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Q:
Predator/prey relationships are an example of
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B) positive feedback, as more prey discourages further predation allowing prey populations to flourish.
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Q:
Which of the following is true of the biosphere?
A) Life processes generally are not shaped by the abiotic spheres.
B) Life processes generally are shaped to the abiotic spheres.
C) It is not connected to the overlapping inorganic spheres.
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Q:
Which of the following is true of the biosphere?
A) It is never referred to as the ecosphere.
B) It exists on other planets in the solar system.
C) It is not connected to the overlapping inorganic spheres.
D) It extends from the floor of the oceans to 8 km (5 mi.) into the atmosphere.
Q:
Living systems are considered
A) biotic.
B) inorganic.
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The larger the scale of a map, the ________ the area covered by the map and the ________ detail it provides.
A) larger; more
B) larger; less
C) smaller; more
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A) written
B) graphic
C) representative fraction
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A scale given as "one centimeter to one kilometer" is an example of a
A) representative fraction.
B) graphic scale.
C) written scale.
D) relative scale.
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The transformation of a spherical global to a 2D surface is a
A) diagram.
B) cone.
C) map projection.
D) globe.
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A) representative fraction.
B) graphic scale.
C) written scale.
D) relative scale.
Q:
Earth's equator is an example of
A) a small circle.
B) a great circle.
C) a prime meridian.
D) a line of equal longitude.
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A) earlier than
B) later than
C) the same as
D) earlier during daylights saving only than
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