Environmental sustainability is the ability of the environment to function without going into a decline from the stresses imposed by human society on natural systems (soil, water, air) that . A)indefinitely, maintain life
B)developed, maintain
C)maintaining, developing
D)renewable, destroys

most likely to see nocturnal animals

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.