Statement of laws, maxims, and constraints:

The four laws of biology

The four maxims of ecology

The three constraints upon all biological populations

LAWS
([1] existence, [2] equivalence, [3] diversity, and [4] reproduction)

MAXIMS
([1] dissipation, [2] number, [3] succession, and [4] apportionment)

CONSTRAINTS
(constant propagation, constant size, constant equivalence)