Silvia has blond hair, even though her mother and father each have brown hair. what do we know about silvia's parents? at least one of her parents has a recessive gene for blond hair. each of her parents must have one recessive gene for blond hair color. each of her parents must have one dominant gene for blond hair. neither of her parents has a gene for blond hair.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.