As presented in the passage, Mrs. Quabarl is best described as A
superficially kind but actually selfish.
B
outwardly imposing but easily defied.
socially successful but irrationally bitter.
D
naturally generous but frequently imprudent.

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.

The graph shows the populations of two species over time. which type of symbiotic relationship does the graph represent? a. commensal b. mutualistic c. parasitic d. parent-offspring e. predator-prey

How do we determine if they are made with matter