Poison dart frogs live in the rainforest. they produce a poison by eating toxic fire ants. the only known predator is a snake, liophis epinephelus. which of the following factors is most likely a density-independent regulator of population growth of poison dart frogs in the rainforest?
a) clear cutting the rainforest
b) limited food source
c) susceptibility to disease
d) increase in population of liophis epinephelus

dna damages cause changes in the structure of the genetic material and prevents the replication mechanism from functioning and performing properly. dna damage and mutation have different biological consequences. while most dna damages can undergo dna repair, such repair is not 100% efficient.

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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