Geologists think that the asthenosphere is molten.
Answer the following statement true (T) or false (F)
False
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In the diagram below, the population growth rate begins to decline after reaching the inflection point most likely because
A) a new keystone predator has been introduced to the ecosystem.
B) the ecosystem's limited resources begin to have an impact on the population.
C) the species in the ecosystem evolve from being K-selected to being r-selected.
D) a catastrophic event, such as a flood or earthquake, disrupts the ecosystem.
Paleontologists estimate that ________
A) extinction is tied exclusively to human activities B) more than 99% of all species alive today have been discovered and described C) 99% of all species that have ever existed are now extinct D) biodiversity is evenly spread over the earth's biomes
The ________ scale would use Roman numerals to qualitatively describe an earthquake that causes "considerable-to-serious damage to buildings."
A) Beaufort B) Mohs C) Modified Mercalli Intensity D) Richter E) Moment Magnitude
According to the Intergovernmental Panel on Climate Change (IPCC), “extremely likely” means a probability of at least ____ percent
a. ?25 b. ?50 c. ?75 d. ?95 e. ?100