Metal detectors that locate metal beneath sand on a beach are activated by
A. electric fields.
B. magnetic fields.
C. alternating current.
D. electromagnetic induction.
Answer: D
Environmental & Atmospheric Sciences
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An annual population growth rate of +1% corresponds to a situation where there are 100 more deaths
per thousand individuals than live births in a given year.c Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences
What type of structure is shown in the photograph?
A) reverse fault B) normal fault C) anticline D) syncline
Environmental & Atmospheric Sciences
What are the overall percentages of the labor force that are engaged in agriculture in developed countries and developing countries, respectively?
A) 10%; 80% B) 5%; 60% C) 2%; 90% D) 15%; 50% E) 9%; 89%
Environmental & Atmospheric Sciences
Which of the following is not considered biota?
A) bacteria B) water C) fungi D) animals E) plants
Environmental & Atmospheric Sciences