5 Written Questions

1. plants and animals that are not native to an area and can cause harm
2. any physical hazard to life caused by having too much or too little of things needed for life
3. habitat destruction, pollution, and excessive hunting and fishing
4. when an ecosystem receives more water than it can use or store
5. species whose last known member has died

5 Multiple Choice Questions

1. plants and animals that originally live in an ecosystem
   1. native species
   2. man-made species
   3. extinct species
   4. invasive species
2. increased number of predators, diseases, increased competition for food & water
   1. invasive species
   2. invasive species bring these problems
   3. native species
   4. man-made species
3. a population that could become endangered in the near future
   1. stress
   2. flood
   3. threatened
   4. dominion
4. the largest man-made stress
   1. habitat destruction
   2. extinct species
   3. man-made species
   4. natural stresses
5. a population so small that it is in danger of becoming extinct
   1. extinct species
   2. invasive species
   3. native species
   4. endangered species

4 True/False Question

1. dominion → when an ecosystem receives more water than it can use or store
   

   True        False

2. natural stresses → fire, flood, & drought
   

   True        False

3. drought → when an ecosystem receives more water than it can use or store
   

   True        False

4. succession → gradual changes in the populations of organisms in an ecosystem
   

   True        False