Which of the statements best describes why primary succession occurs before secondary succession but secondary succession may occur faster and result in higher biodiversity?
es )
A)
Primary succession introduces animal species to the area while secondary
succession introduces plant species to the area.
B)
Primary succession establishes soil in the area while secondary succession
allows for recovery of the community after a disturbance.
Primary succession increases the moisture and humidity in the area while
secondary succession increases the ground cover by plants in the area.
C)
Eliminate
D)
Primary succession allows for decomposition of fire-damaged plants while
secondary succession allows for the migration of new animals into the
area.

You are studying several alleles of an e. coli helicase gene. one allele, called rsr, confers resistance to rs2014, an antibiotic that works by inhibiting helicase activity. bacteria with the rss allele are sensitive to rs2014. another allele, called ts-, produces a temperature sensitive mutation of the helicase. in bacteria with the ts- allele, helicase is inactivated at 42 °c but functions normally at 37 °c. helicase functions normally at both temperatures in bacteria with the ts allele. you obtain the following data while testing four strains of e. coli at different temperatures and doses of rs2014. each number represents the percentage of maximal dna synthesis. based on this data, assign the appropriate genotype to strains a–d in the spaces provided