The increase in oxygen in the atmosphere
A) led to the replacement of eukaryotes by prokaryotes.
B) is associated with changes in the size and diversity of organisms.
C) required new forms of electron donors.
D) was due to the increase in respiration during the Devonian.
E) none of the above
Correct Answer:
Verified
Q3: Nitrogen fixation
A) is the product of respiration
Q4: Mutualistic bacteria in legumes
A) include the cyanobacteria.
B)
Q5: Eutrophication occurs when
A) trophic levels change.
B) nitrogen
Q6: The phosphorus cycle differs from the nitrogen
Q7: The carbon cycle differs from the nitrogen
Q9: Which of the following is not a
Q10: Which of the following is not a
Q11: Human agriculture is threatened by
A) humus in
Q12: In a nutrient spiral,
A) nutrients are transported
Q13: The two main limiting processes in nutrient
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents