Zebras congregate in herds for protection. what aspect of a population describes this behavior? A. population age
B. population density
C. population size
D. population dispersion

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

Defend or refute the argument that the government has too large a presence in the agriculture industry.

9. the history of life on earth is recorded in