If you eat a sandwich that has 100 units of energy, and 40 units are used by your cells, what accounts for the other 60 units of energy?

the first law of thermodynamics

the second law of thermodynamics

Question:

What is eye lens?

lens, in anatomy, a nearly transparent biconvex structure suspended behind the iris of the eye, the sole function of which is to focus light rays onto the retina.

Question:

How is its shape and size cchange.

The Lens Changes Shape to Focus Near Objects. Light rays from objects that are close to the eye are not parallel.

hope it helps (^^)

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