Bees play a central role in the health of terrestrial ecosystems because they are vital to the pollination of plants. The extinction of bees could cause the collapse of plant-
based terrestrial (land) ecosystems. Based on this description, bees can best be
described as a

A. native species
B. foundation species
C. keystone species
D. specialist species

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.

How did global wind belts and calm regions affect transportation in the past? !