When an object is burning, two atoms of oxygen (in the air) combine with one atom of carbon (from the

substance burning). this forms carbon dioxide gas. explain how the law of conservation of matter applies to

this reaction.

2. a piece of wood is burned, and a small amount of ashes are formed. explain why the original piece of wood

and the resulting ashes will not weigh the same.

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.