The achievements of human beings over the last 20,000 years can best be attributed to
a. bigger brains and better brain wiring.
b. interbreeding between homo sapiens sapiens and homo sapiens neanderthalensis.
c. shared and cumulative cultural advances.
d. the domestication of animals and plants.
c. shared and cumulative cultural advances.
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Why is it important to use services of heterogeneous networks? Explain.
What will be an ideal response?
Tubing sizes are always given as the outside ____________________.
Fill in the blank(s) with the appropriate word(s).
Consider the iron?nickel peritectic transformation in Fig. 11.18.
(a) What are the compositions and weight percentages of the phases just above the peritectic temperature (1512°C)? (b) Answer this same question with regard to a temperature just below the peritectic temperature.
The Acme threading tool forms an included angle of ________ degrees?
A) 55 B) 30 C) 29 D) 60