B. Positive feedback, it decreases body temperature.
Answer:
d in interstellar gases and stars
Explanation:
Answer:
When selecting the proper microscope to view a sample, you should choose a simple microscope to look at a fresh lung tissue (whole organ), a compound microscope to observe the patterns of cells on a slide, and an electron microscope to study individual organelles within cells in great detail.
Explanation:
Many types of microscopes are available, they are used by researchers, medical technicians and students on a daily basis upon their need.There are different kinds of microscopes.
The simple microscope is generally considered to be the first microscope ,it provides information about biological specimens. Its magnifying power ranges between 200 and 300 times. it can easily be used to magnify a whole tissue.
With two lenses, the compound microscope offers better magnification than a simple microscope,the second lens magnifies the image of the first is high magnification, which allows users to take a close look at objects too small to be seen with the naked eye, observing pattern of cells.
Electron microscopes uses electrons rather than light for image formation, creating a magnified image, and samples are scanned in a vacuum so they must be specially prepared. An electron microscope offers a high degree of both magnification and resolution, making it useful to study cells in detail.
Answer:
It will be A,B,D
Explanation:
Marlee's evidence should include specifics about where the energy originates. It is chemical energy, stored in the high energy bond attaching the third phosphate. When that phosphate is removed, the energy is released. Cellular respiration does produce ATP, but that instill is not evidence of Marlee's hypothesis.
In biology and ecology, extinction is the end of an organism or of a group of organisms (taxon), normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence.
More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described. More recently, in May 2016, scientists reported that 1 trillion species are estimated to be on Earth currently with only one-thousandth of one percent described.
Through evolution, species arise through the process of speciation—where new varieties of organisms arise and thrive when they are able to find and exploit an ecological niche—and species become extinct when they are no longer able to survive in changing conditions or against superior competition. The relationship between animals and their ecological niches has been firmly established. A typical species becomes extinct within 10 million years of its first appearance, although some species, called living fossils, survive with virtually no morphological change for hundreds of millions of years.
Mass extinctions are relatively rare events; however, isolated extinctions are quite common. Only recently have extinctions been recorded and scientists have become alarmed at the current high rate of extinctions. Most species that become extinct are never scientifically documented. Some scientists estimate that up to half of presently existing plant and animal species may become extinct by 2100.
A dagger symbol (†) next to a species name is often used to indicate its extinction.
