Which of the following is not a type of galaxy?

random galaxy
irregular galaxy
spiral galaxy
elliptical galaxy

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book,and a chromosme is compared to chaper in the book,then what might be compared to a paragraph in the book?

Give the biological term for: structures that display characteristics of living organisms only within living cells

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above