When presenting, you should: Check all that apply.

speak fast
speak slowly
pause at the end of each point
speak clearly
speak loudly enough to be heard easily

What percentage of the earth's water is available for use by living things?

Explain how earth is like a giant bar magnet. how is our magnetic field made?

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.