Briefly explain what happens to an organism during the process of petrification.

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Did you know that a blue wales tongue weighs more than an elephant?

Is there any solid scientific evidence that humans have been cloned?