An increase in the level of carbon dioxide in the atmosphere would result in: A. Planet-wide cooling because the carbon would block incoming solar radiation B. Planet-wide warming, because the carbon dioxide would absorb infrared radiation from
C. Earth
D. Localized warming, because the carbon dioxide would increase convection E. Planet-wide warming, because the carbon dioxide would absorb ultraviolet radiation from the sun

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.