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.
Light is an example of an abiotic factor. It is also the major energy source.
Answer: Coal is a nonrenewable resource.
Answer:You will be doing many laboratory activities which require the use of potentially hazardous bacteria and chemicals.
Explanation:
It is d, large trees produce flammable liquid that absorbs nitrogen
