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The food base of streams within riparian forests is mostly derived from the trees, but wider streams and those that lack a canopy derive the majority of their food base from algae. Anadromous fish are also an important source of nutrients. Environmental threats to rivers include loss of water, dams, chemical pollution and introduced species.
5 days ago · The human skull is used universally as a symbol of death. Death is the irreversible cessation of all biological functions that sustain a living organism. The remains of a former organism normally begin to decompose shortly after death. Death eventually and inevitably occurs in all organisms. Some organisms, such as Turritopsis dohrnii, are biologically immortal, however they can still die from ...
5 days ago · Since 1988, Beissinger has led a team of biologists observing a community of green-rumped parrotlets residing on a cattle ranch in Guárico, Venezuela. While most wild parrots live in the forest canopy — making them very difficult to track and study — green-rumped parrotlets prefer to nest in hollowed-out trees and fence posts in grasslands.
4 days ago · death, the total cessation of life processes that eventually occurs in all living organisms. The state of human death has always been obscured by mystery and superstition, and its precise definition remains controversial, differing according to culture and legal systems. During the latter half of the 20th century, death has become a strangely ...
5. If one ignores the highly modified astronaut suit needed to even walk on the planet, you will notice several strange fluffy looking creatures jumping through the Oramoarbouri canopy or slowly crawling along on Oramoarbourian branches. They are the Simipods, closely related to Duopods and are extremely common.
1 day ago · American black bears have been known to frighten livestock herds over cliffs, causing injuries and death to many animals; whether this is intentional is not known. Occasionally bears kill pets, especially domestic dogs, which are most prone to harass a bear. It is not recommended to use unleashed dogs to deter bear attacks.
5 days ago · The Black Death is widely believed to have been the result of plague, caused by infection with the bacterium Yersinia pestis. Modern genetic analyses indicate that the strain of Y. pestis introduced during the Black Death is ancestral to all extant circulating Y. pestis strains known to cause disease in humans.
