Which statement best describes science? A. Branch of knowledge that studies the natural world to gain knowledge and understanding.
B. Branch of knowledge that studies various societies to gain knowledge and understanding.
C. Branch of knowledge that studies interactions between living things to gain knowledge and understanding.
D. Branch of knowledge that studies pattern, quantity and arrangement to gain knowledge and understanding.

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.