Which of the following statements is most accurate? a. warm air is less dense then cold air b. warm air is denser then cold air c. warm air exerts more pressure on the land than cold air d. warm air sinks

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.

The lineage of pea plants produced round seeds for four generations. the plants that fertilized these pea plants also produced round seeds. however, in the fifth generation, the plant produced to two plants with wrinkled seeds. can that be possible?

Availability of food: a. is dependent upon kin selection. b. can be highly variable, depending on season and rainfall. c. is determined by the alpha male only. d. is restricted to individuals in the dominant hierarchy.