The Answer is A, the iris dilates the pupil.
Answer:
40,000N
Explanation:
Force = Acceleration × Mass
2000×20=40,000
The escape velocity on Venus is 9761 m/s
Explanation:
The escape velocity from a planet is the speed that an object on the surface of that planet must have in order to completely escape the gravitational field of the planet.
Mathematically, it is calculated as

where
G is the gravitational constant
M is the mass of the planet
R is the radius of the planet
For Venus, we have:
is the mass
is the radius
Substituting, we find the escape velocity on Venus:

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Answer: Oil lamps are NOT a natural resource of light.
Explanation: Oil lamps have to be lit and do not give off light themselves. You have to make them and light them for them to give light.