4. Compared with the walls of arteries, the walls of veins a. are thicker.
c. lack valves.
b. are thinner.
d. have more resistance.

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.

What is the starting point in replication called

The function of the larger, more typical pinecone is: it's not multiple choice. to produce pollen to produce sperm to produce eggs to fertilize seeds