49. ?Before humans evolved, species never went extinct. a. True b. False Indicat
ID: 218087 • Letter: 4
Question
49. ?Before humans evolved, species never went extinct.
a.
True
b.
False
Indicate the answer choice that best completes the statement or answers the question.
50. A glacier retreats, exposing bare rock and allowing communities of organisms to move in. This is an example of ____.?
a.
?persistence
b.
?secondary ecological succession
c.
?environmental resistance
d.
?J-curve populations
e.
?primary ecological succession
51. A habitat’s carrying capacity is largely determined by ____.?
a.
?inertia
b.
?a population’s reproductive capacity
c.
?a population’s survivorship curve
d.
?age structure
e.
?the environmental resistance
52. The earth’s variety of deserts, grasslands, forests, mountains, oceans, lakes, rivers, and wetlands can be described as ____.?
a.
?biome diversity
b.
?genetic diversity
c.
?functional diversity
d.
?species diversity
e.
?ecosystem diversity
Indicate whether the statement is true or false.
53. ?The El Niño-Southern Oscillation is an interaction between the oceans and the atmosphere that affects the temperature of surface waters in the Atlantic Ocean.
a.
True
b.
False
54. ?Predation is the only form that interspecific competition takes.
a.
True
b.
False
49. ?Before humans evolved, species never went extinct.
a.
True
b.
False
Explanation / Answer
Answer:
49) Before humans evolved, species never went extinct:
50) A glacier retreats, exposing bare rock and allowing communities of organisms to move in. This is an example of primary ecological succession.?
51) A habitat’s carrying capacity is largely determined by the environmental resistance.?
52) The earth’s variety of deserts, grasslands, forests, mountains, oceans, lakes, rivers, and wetlands can be described as ecosystem diversity.?
53) The El Niño-Southern Oscillation is an interaction between the oceans and the atmosphere that affects the temperature of surface waters in the Atlantic Ocean.
54) Predation is the only form that interspecific competition takes.
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