Modern mammals are descendants of
A) birds that were able to survive the impact that wiped out the dinosaurs 65 million years ago
B) sea animals that colonized the land after the impact that wiped out the dinosaurs 65 million years ago
C) early mammals that lived under the ground that were able to survive the impact that helped to wipe out the dinosaurs 65 million years ago
D) early mammals that killed off the dinosaurs
C
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Butadiene rubber has a very low tensile strength; therefore, it is primarily used as a(n) _________.
Fill in the blank(s) with the appropriate word(s).
An constant electric field, 
N/C, goes through a surface with area 
m2. (This surface can also be expressed as an area of 10 m2 with the direction of the unit vector
src="https://sciemce.com/media/2/ppg__cognero__Chapter_25_Gauss_apos_s_Law.__media__7d94a3f5-3b36-4dc7-aedd-c86064e2bc84.PNG" style="vertical-align:middle;" />. What is the magnitude of the electric flux through this area? A. 24 N ? m2/C B. 48 N ? m2/C C. 0.24 N ? m2/C D. 0.48 N ? m2/C E. 0
According to Newtonian physics, an object with no forces acting on it must
A) be accelerated, with an unchanging acceleration. B) either be at rest or have constant velocity. C) eventually come to rest. D) be at rest. E) fall.
The elapsed time between two successive crossings of the same meridian by the Sun is known as ______________ day
a. one sidereal b. an apparent solar c. a 24-hour d. a mean solar