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Alex777 [14]
3 years ago
6

A) a piece of wood B) sunglass lenses C) a piece of paper D) a clear glass vase Which of these is an opaque object?

Biology
1 answer:
julsineya [31]3 years ago
7 0

An opaque object is any object that is not transparent (allowing all light to pass through it), or translucent (allowing some light to pass through it.) Knowing this we can auto-matically dismiss option D),B), and C) because these all let some form of light through them  so our answer would then be A) because light does not pass through wood like it would the others.

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1. Heme iron is found in animal foods like meat and poultry, whereas the nonheme iron form is found in plant foods like grains and vegetables.

2. The metal and trace mineral copper is part of several enzymes and proteins.

3. Adequate zinc is important for maintaining a healthy immune system and may aid in wound healing.

4. Selenium acts as an antioxidant and aids in thyroid function.

5. Fluoride is not considered essential, but it is very important for maintaining strong, healthy teeth.

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  • Selenium: It is an antioxidant component of some enzymes that act in the elimination of substances with reactive oxygen. Besides this element is important in the regulation of the thyroid function.
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2 years ago
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2 interdependence of life
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