-
The way that a species relates to its environment defmes its
echological niche
-
Consumers that feed on producers are called
herbivores and carnevores
-
A by-product of photosynthesis that is a major constituent in Earth's atmosphere is
oxygen
-
Terrestrial climates on land near the equator tend to be
warmer
-
Near the base of the ___, continental crust gives way to oceanic crust.
continential slope
-
Marshes occur in (on) the
intertidal zone
-
The upper layer of the ocean, where enough light penetrates the water to permit plants to conduct photosynthsis, is called the and occurs at depths of ____meters in most instances.
photic zone 100-200 meters
-
Select the most important nektonic organism listed below
fish
-
____ consume sediment and digest organic matter which is mixed with the mineral grains.
deposit feeders
-
Water of brackish salinity is common in this environment.
bays and lagoons
-
Ocean life that exists above the sea floor is termed ____
pelagic life
-
The intertidal zone is most closely associated with the
barrier island
-
The lithified, unsorted, heterogeneous material deposited by ancient glaciers is called
till
-
Among coarse grained deposits of ancient deserts and arid-basins,the sedimentary structure____is characteristic of sand dunes.
alluvial fans
-
Meandering river sediments that accumulate inside of a river bend are said to form a
point bar
-
As a delta pro grades, deposits of the will lie directly on top of deposits of the prodelta
delta plain
-
The pile of reef debris that has fallen from the steep, wave-swept reef front is called
talus
-
Knobby, intertidal structures formed by cyanobacteria are called
stromatolites
-
A graded bed formed by the flow of dense sediment-charged water moving down a slope into deeper water is known as a
turbidite
-
Below depths of 4009111, the dominant sediment on the sea floor is
pelagic sediment or calcareous ooze
-
_____ occur in lagoons behind elongate reefs.
patch reefs
-
A time-stratigraphic unit is the same thing as a
chronostratigraphic unit
-
____includes all strata in the world that were deposited during a particular interval of time called an Era.
time rock unit
-
A ____is a polarity time-rock unit.
chron
-
Among those listed below, is the smallest lithostratigraphic unit
age stage
-
A regression might result in a sandy beach deposit (or facies) being deposited over a ___ _
- deposit (or facies).
- mudstone
-
If a mineral crystal originally contained 80 atoms of a common, radioactive isotope of uranium after 3 half-lives, how many atoms of the original isotope would remain in the crystal?
10
-
Global changes of sea level are termed
eustatic change
-
Castile Evaporites (CaS04) have thin, alternating light and dark sediment layers which are probably seasonal and are therefore equivalent in appearance to
event stratigraphy
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