Examlex
What is the minimum amount of energy required for an 60-kg climber carrying a 5-kg pack to climb Mt.Everest,8,150 m high?
Flexibility
The ability to adapt to new, different, or changing requirements, conditions, or situations with ease and speed.
Lens
A curved piece of glass or other transparent materials used in optical devices to converge or diverge light.
Visual Field
The total area in which objects can be seen in the peripheral vision while the eye is focused on a central point.
Cones
In the retina, specific cells called photoreceptors facilitate color vision and are most efficient in conditions of ample light.
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