How does a thermostat regulate temperature

Which of the following would be an important part of a multi-step plan to restore the stability of the red-cockaded woodpecker's ecosystem?

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird