Why do scientists say that evolution is a "theory"?
A) because it explains a great deal about life and is supported by an enormous body of evidence
B) because they are not very confident that it really happened
C) because it is supported by only a small amount of evidence
D) because it's really just a guess about how life developed on Earth
A
You might also like to view...
A motor drives a shaft at f 5 10 Hz and delivers P 5 35 kW of power. The allowable shear stress in the shaft is 45 MPa. The minimum diameter of the shaft is approximately:
(A) 35 mm
(B) 40 mm
(C) 47 mm
(D) 61 mm
A generator coil rotates through one revolution 60 times each second. The frequency of the emf is
A) 120 Hz. B) 60 Hz. C) 60 Hz. D) 30 Hz. E) (60/ ) Hz.
According to the principle of equivalence, observations made of falling objects at Galileo's Leaning Tower of Pisa are indistinguishable from observations made in
A) a spaceship orbiting in a gravitational field. B) a spaceship accelerating at g in deep space. C) any uniformly moving reference frame. D) all of the above E) none of the above
When the electric field is zero at a point, the potential must also be zero there
A) True B) False