Describe humankind’s ecosystem and explain why it has expanded
What will be an ideal response?
Humanity's ecosystem is anywhere that people live, work, and move about. This includes the atmosphere in which
our airplanes fly, the waters in which our ships float, and the land on which we live. It is our ability to move about
so freely that has expanded our ecosystem so greatly
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A rule for ____ circuits states that the total current in a ____ circuit is the sum of the currents through the individual paths.
a. series b. combination c. parallel d. reverse
Summary sheets, also referred to as _____, are used to sum up the prices and quantities for labor, material, and equipment.
a. worksheets b. estimates c. takeoffs d. pricing sheets
The most common type of polyphase system is ____________________ phase.
Fill in the blank(s) with the appropriate word(s).
To ensure your safety on the jobsite, you must stay alert, __________, and follow all safety guidelines.
A. attend safety meetings B. understand the hazards involved C. be first aid certified D. none of the above