Suppose a rancher wants to buy some grassland to raise cattle. What should she know about energy flow before she invests in the land or the cattle?

Most enzyme names end in the

How long does it take a skateboarder going 6.0 m/s to come to a complete stop if she slows down at a rate of 2.0 m/s^2

The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?