Which of the following was the LEAST likely factor in the Cambrian explosion? A. The emergence of predator-prey relationships between animals B. The accumulation of diverse adaptations such as shells and different modes of locomotion C. The movement of animals into land D. The accumulation of sufficient atmospheric oxygen to support the more active metabolism of mobile animals

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?

What is the main fuel source for the work of the cell

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.