A student is using a terrarium like the one shown here to study the cycling of carbon dioxide. Which observation would be the best evidence of carbon cycling?

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

The “ecological footprint” left by a citizen of a developed nation is about four times larger than that left by a citizen of a developing nation. why is this the case?