1. Variety of species and abundance of species 2. Refers to the heterogeneity present in the world or a habitat,
ranging from macromolecules within the cells to biomes
3. Plant or animal that exist in small numbers
4. It is the loss of species
5. Species in danger of extinction
6. Number of different species present in an ecosystem
7. Relative abundance of individuals of each of those species
8. Refers to the role of that a species play in its ecosystem
9. They serve as biological smoke alarms
10. The world’s largest coral reef
11. Also known as the four major causes of loss of diversity
12. The process during which a large expanse of habitat is
transformed into a number of smaller patches of smaller
total area
13. Species that are introduced accidentally or intentionally
14. Also called overharvesting
15. They have broad niches