What are five different levels of organization that ecologists might study biological relationships?

Which statement about inheritance is true? o girls get most of their traits from their moms, boys get most of their traits from their dads. o male offspring will always have an x-linked genetic disease if the mom is a carrier o fathers always determine the gender of the offspring in humans. o males never have y chromosomes.

Explain why phospholipid molecules form a bilayer. (3 marks)

Match the types of competition to their descriptions