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The misconception that sharks do not get cancer was spread by the 1992 book Sharks Don't Get Cancer, which was used to sell extracts of shark cartilage as cancer prevention treatments. Reports of carcinomas in sharks exist, and current data does not support any conclusions about the incidence of tumors in sharks.
It is a common misconception that high degrees of taxonomic diversity within an ecosystem will ultimately result in a healthier, highly functional system. [2] For example, an ecological microcosm consisting of 30 species of legume plants (which add fixed nitrogen to the soil) is only fulfilling one ecosystem function (nitrogen fixation) despite ...
This misconception is encouraged as it is common shorthand for biologists to speak of a purpose as a concise form of expression (sometimes called the "metaphor of purpose"); it is less cumbersome to say "Dinosaurs may have evolved feathers for courtship" than "Feathers may have been selected for when they arose as they gave dinosaurs a ...
An ecosystem (or ecological system) is a system formed by organisms in interaction with their environment. [2]: 458 ...
Objections to evolution have been raised since evolutionary ideas came to prominence in the 19th century. When Charles Darwin published his 1859 book On the Origin of Species, his theory of evolution (the idea that species arose through descent with modification from a single common ancestor in a process driven by natural selection) initially met opposition from scientists with different ...
The delta smelt has been called a "sentinel species," meaning that its health signals the condition of its ecosystem — and the signal it has flashed is alarming. (Think of it as a canary in the ...
Kimberly Cooley-Reyes, 66, falls into that category. An avid gardener, Cooley-Rees found human composting after her best friend passed away several years ago and had a green burial.
Ecosystem services are ecologically mediated functional processes essential to sustaining healthy human societies. [6] Water provision and filtration, production of biomass in forestry, agriculture, and fisheries, and removal of greenhouse gases such as carbon dioxide (CO 2) from the atmosphere are examples of ecosystem services essential to public health and economic opportunity.
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