What is the maximum magnification of most classroom compound light microscopes? 500x 1,000x 2,500x 5,000x

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?

Draw the structure of dna nucleotide with adenine as nitrogenous base

What element is able to combine with itself and hydrogen to form large molecules ?