Today, any environment surrounded by other ecosystems that are unlike it is subject to Wilson’s theory of island biogeography. Because they are geographically isolated from other related ecosystems, these ecologies are referred to as "islands." Waterbodies divide tropical islands, but this idea also takes into account mountaintops, caverns, and other isolated ecosystems.
<h3>
What is Wilson’s theory of island biogeography?</h3>
- The biologist Edward O. Wilson and environmentalist Robert MacArthur published The Theory of Island Biogeography in 1967. It is widely considered as a foundational work in the ecology and biogeography of islands. The book was reissued by the Princeton University Press in 2001 as a volume in their "Princeton Landmarks in Biology" series.
- The hypothesis that insular biota maintain a dynamic equilibrium between extinction and immigration rates was made more well-known by the book. An island's pace of new species immigration will decline as the number of species increases, while the rate of extinction of native species will rise.
- Thus, MacArthur and Wilson anticipate that there will come a point of equilibrium where the rate of immigration and the rate of extinction are equal.
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Answer:
smog
Explanation:
Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.
The answer is Aspiration pneumonia. The low pressure in the cuff of the endotracheal tube is a risk for the aspiration pneumonia while the high cuff pressure can cause ischemia, pressure necrosis and tracheal bleeding.Hope this would be of big help.
Answer:
3. An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase
Explanation:
Mules are hybrids of a cross between a female horse and a male donkey. Horses contain 64 chromosomes while donkeys contain 63 chromosomes in their somatic cells respectively. This means that they each produce 32 and 31 chromosomes respectively during meiosis. A mule, hence, contains 32+31= 63 chromosomes in their somatic cells.
This chromosome number in mules are uneven for meiosis to occur because meiotic division requires that an even number of homologous chromosomes pair together in a process called SYNAPSIS during prophase I of meiosis I. This is impossible in a mule because of the uneven number of chromosomes in its cells.
Also, during metaphase of meiosis, the homologous chromosomes need to be properly aligned at the equator for separation to occur. This is also impossible in a mule considering the number of chromosomes that don't add up.
Due to this reason of unevenness in the number of chromosomes present in a mule, meiosis will not occur and if meiosis (gamete formation) does not occur, reproduction cannot take place. Therefore, the mule is a sterile species i.e. cannot produce offsprings via sexual reproduction.
An outbreak of anthrax has occurred in a southwest community. Isadora is the local vet, so whenever she gets a call about a sick animal, anthrax is in the back of her mind injured animal would Isadora NOT worry about contracting anthrax is Herbivores.
<h3>What animals get anthrax?</h3>
Anthrax occurs naturally around the world in wild and trained hoofed animals, especially cattle, sheep, goats, camels and antelopes.
It can also happen in humans when they are told to the bacterium, usually through handling creatures or animal hides.
Thus, Herbivores injured animal would Isadora NOT worry about contracting anthrax.
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