Which of the following best explains why machines can never be 100% efficient?
a. the tendency of energy not to spread out
b. the tendency of energy to spread out
c. the tendency of energy to be kept
d. the tendency of energy to be lost
Ans: b. the tendency of energy to spread out
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The endocrine gland that is often called the master gland because of its influential role in regulating the other endocrine glands is the
A) thyroid B) pineal C) adrenal D) pituitary
The proposal that one type of organism can change gradually into another type over a long period of time is known as:
A. preconception. B. preservation. C. natural history. D. evolution.
Four of the five kingdoms of organisms were apparent to the earliest scientists of Aristotle's time, and the fifth kingdom became apparent with the invention of the microscope.
a. true b. false
What is an Hfr strain of bacteria?
What will be an ideal response?