<span>The overall amount of water on our planet has remained about the same for two billion years.
True.</span>
Memory would be a good answer, but I'm quite uncertain :/
Answer:
The correct answer is A. Cells are the basic unit of life.
Answer:
Photosynthesis and Respiration
Explanation:
In photosynthesis C is used in the form of CO2.
In respiration C is released in the form of CO2.
The correct answer is C. lens. Lens is a convex sealed capsule containing a clear fluid and focuses light to the back of the eye. Iris is the colored part of the eye that contracts and expands under influence of ciliary muscle. Retina is the inner surface of back of eye. Cornea is a transparent and curved surface of eye that helps to focus light.