The probe tip of a scanning probe microscope
A) floats above the atoms of a sample.
B) etches into the atoms of a sample.
C) chemically changes the atoms of a sample.
D) injects a magnetic field into the atoms of a sample.
A
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Energy can be created and or destroyed with unlimited potential.
Answer the following statement true (T) or false (F)
Fungi
A) include both unicellular and multicellular organisms. B) include both autotrophs and heterotrophs. C) always reproduce asexually using spores. D) cause tuberculosis and Lyme disease in humans.
In the U.S., the command-and-control environmental laws of the early 1970s, together with the ensuing amendments and updates that have been made to them over time,
A. were necessary as US industries had zero incentive to control pollution. B. were an inexpensive incentive for industrial polluters to improve performance. C. are given considerable credit for cleaner air and water in recent decades. D. draws distinctions between the needs of firms and costly equipment upgrades.
Which phylum contains the most widely distributed and successful parasitic marine animal?
a. nematoda b. annelida c. polychaeta d. mollusca e. platyhelminthes