The human body is composed of cells, organs, organ systems, and tissues. how are these organized? a) groups of cells form tissues. b) groups of organs form tissues. c) groups of organ systems form tissues. d) groups of tissues form organ systems.

*will mark brainliest to first correct answer* photosynthesis led to increasing levels during the later proterozoic eon? a. oxygen b. water c. carbon dioxide d. none of the above

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.

Apart of an ecosystem that can restrict the growth of a population is referred to as