the principle of is the concept that ancient life forms evolved in a definite order and therefore their fossils can help determine the geologic ages of strata.

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Select all the true statements about the cosmic microwave background radiation

White-tailed deer are considered to be an overpopulated species in the central united states. which of these events probably contributed the most to white-tailed deer exceeding their carrying capacity?