Eating a small serving of a food that is very acidic might present something of a paradox to your stomach because

Which organelles are involved in energy conversion

In which situations is the principle of cross-cutting relationship useful in determining relative age?

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."