2.1 Living organisms control their composition by a complex web of
Water is the medium of life.
Compounds of carbon, hydrogen, and oxygen a
Evolution and biodiversity
5.1 There is overwhelming evidence for the evolution of life on Earth.
The diversity of life has evolved and continues to evolve by natural
4.1 The continued survival of living organisms, including humans,
depends on sustainable communities
Ecosystems require a continuous supply of energy to fuel life
6.1 The structure of the wall of the small intestine allows it to move,
digest, and absorb food.
The blood system continuously transports substances to cells and
3.1 Every living organism inherits a blueprint for life from its parents.
Chromosomes carry genes in a linear sequence that is shared by
members of a species.