Discuss the debate about whether Neanderthals are a separate species from modern humans or a
subspecies. What will be an ideal response?
If Neanderthals were a subspecies, their species name would be Homo sapiens neanderthalensis.
If they were a separate species, their species name would be Homo neanderthalensis. If it could
be shown that modern humans and Neanderthals interbred and produced fertile offspring, then it
would suggest that they were a subspecies
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The continuing addition of large amounts of nitrogen and phosphorus to aquatic ecosystems may exceed planetary boundaries and create a "tipping point" in which
A) nitrogen and phosphorus are depleted from soils. B) high nitrogen and phosphorus levels cause aquatic ecosystems to change in ways difficult to reverse and that are damaging to human food production. C) these ecosystems produce far more human food than ever before. D) water is lost from these systems, and they become deserts.
A semiarid climate represents a transition zone that surrounds a desert and separates it from the bordering humid climates
Indicate whether the statement is true or false
The secondary rainbow is located outside the primary bow
Indicate whether the statement is true or false
Drawdown of groundwater due to heavy pumping from a well may result in a(n) ________, a "dimple" in the water table
A) geyser B) spring C) artesian well D) cone of depression