1. Write a letter to Grandma telling her about how the world human population has grown in the past and how it is expected to grow in the next century. Tell her about ecological footprints and how...

1. Write a letter to Grandma telling her about how the world human population has grown in the past and how it is expected to grow in the next century. Tell her about ecological footprints and how easy it will be for Earth to support this population.

2. Why do you think most of the early animal colonizers of Krakatoa were flying insects and birds?