Question

Which of the following statements about human evolution is correct?

	A.	Modern humans are the only human species to have evolved on Earth.
	B.	Human ancestors were virtually identical to extant chimpanzees.
	C.	Human evolution has occurred within an unbranched lineage.
	D.	The upright posture and enlarged brain of humans evolved separately.

The ecological impacts of warming are manifold. One response has been to reduce seed production my many plants. An example involving phenology and mutualism for this would be:

	A.	Warming accelerates the timing of flowering but not the time for arrival by pollinators and thus reduces pollination and subsequent seed production.
	B.	An insect increases its metabolic rate from warming, requiring it to eat more plants, which reduces seed production.
	C.	Warming induces greater water stress in the summer and this reduces productivity and seed production.
	D.	All of the above The total resources required to sustainably support human activities is described as the ecological footprint. A country can have a larger footprint than actual area because: A. They are extracting resources at non-sustainable rates and imperiling future resources B. They are importing resources from other countries C. Both a and b D. None of the above

Answer 1

1.Option D - The upright posture and enlarged brains of humans evolved separately.

2. Option D - All of the above

3. Option D - none of the above