Why have scientists experimented with genetically altering plants with the material fireflies use to glow in the dark?
What will be an ideal response?
The material that causes fireflies to glow in the dark has uses in medicine, but it is difficult to obtain enough material to be practical. Scientists have been experimenting with inserting genetic material from fireflies into tobacco plants in the hope that they can breed new plants that will provide a readily available and inexpensive supply of the firefly substance.
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All of the following are benefits of organic soil amendments EXCEPT that they ____
a. contain large amounts of organic matter that improve the physical condition of the soil b. support growth of beneficial soil organisms c. use otherwise harmful industrial by-products d. produce greater yields than an equivalent fertilizer
Enlarged Homestead Act
What will be an ideal response?
The equipment pad is the key to effective ________
A) construction specifications B) equipment alignment procedures C) operation of rotating equipment D) placement of concrete forms
The drawing that shows all of the connection details of the control system components arrange into a loop is the _____
A) control panel layout B) P&ID C) loop diagram D) instrument location plan