Tornadoes, logging operations, and less severe fires all initiate which of the following types of succession?
A) primary
B) secondary
C) tertiary
D) quaternary
Answer: B) secondary
You might also like to view...
What reptilian taxon is extant (has at least some members that are still living; opposite of extinct)?
A. Ornithischia B. Squamata C. Saurischia D. theropods E. ichthyosaurs
The most common control mechanism to prevent overproduction or underproduction of hormones is
a. positive feedback. b. opposing interaction. c. negative feedback. d. synergistic interaction. e. permissive interaction.
Within an ecosystem, plants are known as producers or ____
a. heterotrophs b. consumers c. “other feeders” d. decomposers e. autotrophs
Celiac disease is an autoimmune disorder which destroys the microvilli of the small intestine. Vitamin B12 can be absorbed by passive diffusion across the microvilli of the small intestine. Consider a patient who has had 10% of their microvilli destroyed. If the concentration of vitamin B is 0.6 pg/ml inside the lumen of the small intestine and 0.3 pg/ml on the inside of an epithelial cell, how is the diffusion rate of vitamin B altered in this patient?
A. It is increased by 10%. B. It is reduced by .3%. C. It is reduced by .003%. D. It is reduced by 10%. E. It is increased by .3%.