PLEASE PLEASE HELP ME 1. What two structures on the microscope will you use to focus on your specimen?

2. Why should you never use the coarse adjustment knob on high power?

3. When do you use the fine adjustment knob?

4. Our microscopes have three objectives. What are their powers?

5. What is the magnification of the ocular lens?

6. What is the shortest objective called?

7. How do you switch objectives?

8. Which structure controls how much light passes through the specimen?

9.How should you carry the microscope?

10. How can you prevent your slide from slipping on the stage?

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen