Which of the Examples Below Provides Appropriate Abiotic and Biotic

Multiple Choice

Which of the examples below provides appropriate abiotic and biotic factors that might determine the distribution of the species in question?

A) the amount of nitrate and phosphate in the soil, and wildflower abundance and diversity
B) the number of frost-free days, and competition between species of introduced grasses and native alpine grasses
C) increased predation and decreased food availability, and a prairie dog population after a prairie fire
D) available sunlight and increased salinity in the top few metres of the ocean, and the abundance and diversity of phytoplankton communities
E) the pH and dissolved oxygen concentration, and the streams in which brook trout can live