The fundamental difference between a protostar and a star is that the latter has nuclear fusion as its energy source and the former does not
Indicate whether the statement is true or false
TRUE
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In solid-solution strengthened metals, substitutional and interstitial solid-solution atoms interact with _________dislocations in the metal.
Fill in the blank(s) with the appropriate word(s).
Without the ozone layer, life on Earth would be in danger from increased levels of _________ radiation.
a. UV b. X-ray c. gamma ray d. infrared e. microwave
A mule is an example of an exception to which of the fundamental characteristics of life?
A) response to environment?mules cannot respond to changing environmental conditions and that is why they are stubborn B) evolutionary adaptation?because mules are sterile they cannot evolve and adapt C) growth and development-mules being sterile do not grow and develop like other life forms D) reproduction?a mule is sterile and cannot reproduce even though it is the product of reproduction between two closely related animals (a horse and a donkey)
An object is in free fall as soon as it is released, whether it is dropped from rest, thrown downward, or thrown upward
Indicate whether the statement is true or false