What part of a lake is unable to support plant growth A. Aphotic zone
B. Photic zone
C. littoral zone
D. All of these

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Which represents a negative impact of technology

How do living things obtain phosphorus