1. Which statement best describes the relationship between dead zones and agricultural runoff?

a. Agricultural run off leaves a filmy layer on the surface of the ocean which
prevents carbon dioxide from dissolving in the ocean
b. Agricultural run off creates short-term algal blooms which can lead to decreased
dissolved oxygen in the ocean causing fish to migrate elsewhere
C. Hurricanes increase agricultural runoff which can lead to an increase in oceanic
decomposition
d. Agricultural runoff has only positive effects on our oceans

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

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.