1. What is the ultimate cause of all evolution? A. Sudden disasters caused by external forces

B. Infectious disease

C. Environmental change

D. Time

2. The first major anatomical difference that distinguishes our ancestors from those of the Chimpanzee and Gorilla is

A. Bipedalism

B. Bipartite behavior

C. Brachiation

D. Bulimia

3. An elderly human ancestor provides extra food for her grandchildren. This is an example of:

A. Environmental forcing

B. Natural selection

C. Kin selection

D. Selective breeding

4. Anthropology was developed as an American discipline primarily through the study of

A. Early hominins

B. Primates

C. Arrowheads

D. Native Americans

1.

Environmental change(c)

2.

bipartite behaviour(b)

3.

selective breeding (d)

4.

early hominins(a)//

I hope this helps you friend

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1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.