How many years ago were the first communities and governments formed

Which explains why secondary succession generally occurs more rapidly in an area than does primary succession?

Suppose you find a piece of yellow metal in a stream how can you tell if it's real gold

13. What are the advantages and disadvantage to the exposure of UV radiation?

What are two bones that make blood cell (long bones) ?

Define the terms relative dating and absolute dating and explain the difference between the two. How are the two methods used?

Where is the moon's gravitational pull the strongest?

A turkey cooking in an oven will be ready when the internal temperature reaches 180°F. Convert this into Celsius and Kelvin

Adaptations often give organisms a competetive edge. a. True b. False

Biosphere II is a self-contained ecological system that was sealed with researchers inside. Unfortunately, the microbes in the soil consumed rich organic matter and produced carbon dioxide.

When the enzyme amylase from the pancreas is finally ready for use, it is stored within cell cytoplasmic vesicles called___. nuclei. zymogen granules. mitochondria. cristae. vacuoles.