Geography- California

Hello I got a few questions, I wonder if you could help me with them here they are:

Population and Migration

1. What are some possible consequences of population growth?

2. What is a population pyramid and how can it be used to estimate future changes in population size?

3. Give examples of push and pull factors.

Ethnic Groups

4. How have Native Americans altered the landscape of California?

5. Discuss, using examples, ethnic equality during the Gold Rush.