Any particular element can always identified by its

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?

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm