Describe how many species of wild animals, birds, and fish have become extinct in this country since colonial times
Explain what factors most commonly lead to extinction
What will be an ideal response?
At least 117 vertebrate species have gone extinct in the United States since colonial times. When the population of
a species falls too low, it can be considered threatened. If it falls to the point that exceptional efforts are required
to help it survive, it is said to be endangered. Overhunting/overfishing, disease, and habitat destruction are the
primary factors leading to extinction
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Answer the following statement(s) true (T) or false (F)
1. A programmable logic controller (PLC) is a computer. 2. Programmable logic controllers are designed to be programmed with common computer languages. 3. The microprocessor chip used in most programmable logic controllers (PLCs) is the same as found in most home and business personal computers. 4. The I/O rack is used to connect the CPU to the outside world. 5. There is a physical timer or counter in the programmable logic controller (PLC).
Which of the following would not be a factor considered in a load chart configuration?
a. Boom length, boom angle, and load radius b. Jib boom installed or stowed c. Counterweight configuration d. Type of boom controls
The place where the manure pile was stored last year, a narrow strip that used to be a limestone gravel farm road, and the spot where fertilizer is usually transferred from a nurse truck to the tractor spreader are all examples of parts of a 25 hectare field that should be treated as follows when sampling soil for the soil test lab
A) included, like all other areas, in the sample sent in for analysis B) more intensively sampled (more cores per hectare) than other areas C) carefully avoided while sampling D) sampled more deeply than other areas E) sampled and sent in separately
Technician A says that most non-running vehicles can be pushed into the shop by one person. Technician B says to use an electric pusher when moving a non-running vehicle. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B