What is an nonconformity?

a. an intrusion that runs between rock layers
b. an intrusion that cuts across another rock
c. when a sedimentary rock is deposited on top of an eroded non-sedimentary rock
d. when a sedimentary rock is deposited on top of an eroded sedimentary layer

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land

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.