Explain how entropy relates to the amount of energy that is available in the different trophic levels of a food chain.

Which continents lie only in the northern hemisphere

15 points need quick 1. looking at your graph and the geologic time scale during what period did this rock form? what is the age span of the rock, in millions of years? 2. this rock sample is limestone and shale. with what you know about rock formation, what type of environment did these organisms live in? 3. if some of these fossil samples were found in a rock also containing leaf fossils, could you use radiocarbon dating to determine the age of this rock? explain.

Why did ohio and michigan have such conflict over their state boundaries