Answer A, climbing vines. Thigmotropism is growth in response to mechanical contact.
three types
The three types of thermal expansions are Linear expansion , Superficial expansion and Cubical expansion.
D. Amplitude has no effect on velocity.
This question might have been to confuse you with the doppler effect which states that wavelengths become longer if the object causing the waves is moving away from the observer.
Explanation:
When the air resistance on an object which is also called the drag force, equals to the object's weight (N) (Don't get confused here, Weight here refers to the force exerted by an object. Mass is measure in kgs. So therefore the Weight will be measured in Newtons or N), it reaches terminal velocity where the object will have the acceleration of 0 and will fall at constant velocity.
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We have no idea what the illustration shows, because you neglected to let us see it.
The most common reason for light to bend is refraction, normally caused by a difference in the <em>speed</em> of the light in two different media ... the one it comes out of and the one it goes into.