Answer:
How Biogeography Affects Biodiversity
Alfred Russel Wallace, Father of Biogeography
Figure 1: Alfred Russel Wallace, Father of Biogeography
Some places contain more species than others. For example, Antarctica has fewer species than a temperate deciduous forest, which in turn has fewer species a tropical rainforest. For over 150 years, researchers have sought to make sense of the gross and fine scale spatial patterns in biodiversity, and to elucidate both the proximate and ultimate causes for these patterns.
This article describes some of the major geographic patterns in species richness, and the processes and theories that are thought to account for these patterns. Much of this knowledge has emerged from the tremendous body of work from one scientist, Alfred Russel Wallace (Figure 1), widely regarded as the “Father of Biogeography.” Aside from co-originating the process of Natural Selection with Charles Darwin, Wallace spent extended periods studying the distribution and diversity of plants and animals in Amazonia and Southeast Asia in the mid 1800s. Many of the patterns and processes featured in this article were initially described by Wallace, and careful study of his work indicates that his ideas presaged many of the discoveries made by his numerous successors.
Many of the spatial patterns in biodiversity are overt, others are subtle and yet additional patterns remain undetected. While the existence of these patterns may be obvious — and changes in the environment that are paired with these patterns may also be obvious — the mechanisms that cause the differences in biodiversity along environmental gradients are under still the subject of scientific debate. Because large-scale patterns are the emergent result of complex interactions at many spatial and temporal scales, no single answer is likely to ever emerge, but with continued research our understanding of the processes shaping these patterns increases.
Historical Processes Affecting Biogeography
Darwin's finches of the Galapagos Islands are a classic example of adaptive radiation.
Figure 2: Darwin's finches of the Galapagos Islands are a classic example of adaptive radiation.
All species occurring in at a given place and time either arrived from another place or originated in that location from ancestral species. This fact applies to extinct species that were ancestors of all extant species. Species richness in a given location is the result of three factors — the rate of speciation, the rate of extinction, and the dispersal of species from other locations. In principle, if biogeographers could understand how the current and past environment has shaped these three factors, we would then obtain a comprehensive understanding of what generates all biogeographic patterns of species richness. However, numerous environmental and organismal parameters can drive these historical factors, in both complex and interacting fashions.
Which type of soil makes it MOST
difficult for plants to thrive and
decompose organic material?
Explanation:
Poorly drained soils tend to have a high percentage of organic matter because low oxygen levels limit decomposition organisms.
The following are the results of a genotype being "foiled" for a dihybrid cross: BS, Bs, bS, bs.
Determine the parents' genotype
A. BbSS
B. BBss
C. BsSs
D. BBSS
Answer:
C.
Explanation:
How do prions make more of themselves?
How have rising ocean temperatures affected coral communities?
A. Corals become less photosynthetic as the surrounding temperature increases.
B. Corals find fewer food sources when algal blooms increase due to warmer waters.
C. Corals attract fewer algal species when they become warmer.
D.Corals become bleached as they expel algae with increased temperatures.
Answer: D.Corals become bleached as they expel algae with increased temperatures.
Explanation:
As ocean temperatures rise, it can stress coral polyps, that causes them to lose algae. As a result, there is "coral bleaching". It is called that because the algae gives coral its color. When all the algae is gone, the coral is white.
The bleaching of corals in the world, are due to the increase in sea temperatures, but to understand how this changes corals, we need to know that.....
Coral bleachingCoral bleaching is a serious ecological problem mainly related to the increase in ocean water temperature. This problem can occur transiently or fatally, killing the coral. In the bleaching phenomenon, the corals become translucent, making it possible to verify the calcium carbonate skeleton of these animals. This happens because of the expulsion of zooxanthellae algae or because of the loss of pigment from these algae, which live in a mutualistic association with the coral.
Question answerD.Corals become bleached as they expel algae with increased temperatures.with this information, we came to the conclusion that with the increase in sea water temperature, algae that are associated with corals are expelled.
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the contractile organelle of skeletal muscle fibers is
Answer:
The myofibrils are the contractile organelles in the muscle fibers.
The function of the mitotic cell cycle is to produce daughter cells that __________.
a. have the same number of chromosomes as the parent cell but not the same genetic content.
b. have the same number of chromatids as the parent cell had chromosomes.
c. have a random assortment of maternal and paternal chromosomes.
d. are genetically identical to the parent cell (assuming no mutation has occurred).
e. have none of the listed characteristics.
Answer:
The answer is D.are genetically identical to the parent cell (assuming no mutation has occurred).
Explanation:
The function of the mitotic cell cycle is to produce daughter cells that __________.
the division results in the generation of two daughter cells that are genetically identical to the parent cells and each daughter cell contains the same number of chromosomes and all cell content inherited from the parent cell.
Where does the energy come from to power passive and active transport?
Answer:
To move substances against a concentration or an electrochemical gradient, the cell must use energy. This energy is harvested from ATP that is generated through cellular metabolism. Active transport mechanisms, collectively called pumps or carrier proteins, work against electrochemical gradients.
Explanation:
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5. What natural phenomenon converts nitrogen into the form which organisms can use?
Answer:
the nitrogen cycle
Explanation:
Escribe las partes de la célula:
Doy corona
Answer:
A. MEMBRANA PLASMATICA
B. NUCLEO
C. RETICULO ENDOPLASMATCO
D. APARATO DE GOLGI
E. LISOSOMA
F. MICROFILAMENTO
G. MITOCONDRIA
H. RIBOSOMA
I. CENTROSOMA
Which of the following would be the most likely reason some minorities may tend to underutilize therapeutic treatment? lack of transportation language barriers irregular work schedules lack of facilities in a rural location
the answer is language barriers took the test on edge 21
Answer:
B
Explanation:
Answer:
This is correct. It is B. language barriers
Explanation:
It's hard to get therapy if you don't speak the same language.
the amount of water in each body compartment mainly is controlled by
Answer: Ion Concentration
The ion concentration in water molecules controls the amount of water in a compartment
The concentration of ions in a body of water determines the rate of diffusion and osmosis that occurs in a body of water contained within a body compartment. which has a direct impact on the amount of water that is held in any water body compartment.
Hence we can conclude that the ion concentration in water molecules controls the amount of water in a compartment.
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list the function done by living organisms
Answer:
Respiration,Growth,Nutrition ,Reproduction and Excretion
Explanation:
the biceps brachii–radius arrangement represents a __________-class lever system.
Answer:
third
Explanation:
Qué relación tiene cultivar y la diversidad por favor
Answer:
La diversidad se refiere a aquellos aspectos que son diferentes entre las personas, ya sea el género, la edad, el sexo, la ubicación o incluso el idioma.
Explanation:
Se trata de diferentes ideas, opiniones y puntos de vista. Cuando incorporas la diversidad en el lugar de trabajo, estás creando una mezcla poderosa.
in a species of mice, short hair is dominant to long hair. if a short-haired individual is crossed with a long-haired individual and both long- and short-haired offspring result, one can conclude that
Answer:
the long haired trait was the dominant trait and the short haired one was the recessive trait
Explanation:
in a species of mice, short hair is dominant to long hair. if a short-haired individual is crossed with a long-haired individual and both long- and short-haired offspring result, one can conclude that the long haired trait was the dominant trait and the short haired one was the recessive trait
What are silver carp strengths and weaknesses?
What is an argument in favor of using embryonic stem cells over adult stem cells?
A. Embryonic stem cells can differentiate into many more types of cells.
B. Embryonic stem cells are never really living.
C. Adult stem cells cannot be cultured.
D. Adult stem cells reproduce much faster than embryonic stem cells.
Answer:A
Explanation:
The ES cells is pluripotent, and the adult stem cell is unipotent.
Why is the fatty acid of the lipids often reffered to as a hydrocarbon chain?
Answer:
The chain includes hydrogen and carbon.
Explanation:
They all have a central carbon atom with four components around it.
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State TWO reasons why enzymes are referred to as 'biological catalysts'.
Answer:
Like all other catalysts, enzymes are characterized by two fundamental properties. First, they increase the rate of chemical reactions without themselves being consumed or permanently altered by the reaction. Second, they increase reaction rates without altering the chemical equilibrium between reactants and products.
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put this in your OWN words The pattern can shift back and forth irregularly every two to seven years and cause disruptions of temperature, precipitation, and winds.
Answer:
distruptions of temperature, precipitation and winds are caused by patterns that shift back and forth irreguraly every 2 - 7 years
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What are latent prints?
Explanation:
Latent prints are formed when the body’s natural oils and sweat on the skin are deposited onto another surface. For example if you put your thumb on your glass you will see that the oils will put your fingerprint there
In an ecosystem, what form does carbon take after photosynthesis? What form does carbon take after cellular respiration?
Answer:
organic molecules and carbon dioxide
Explanation:
Photosynthesis by land plants, bacteria, and algae converts carbon dioxide or bicarbonate into organic molecules. Organic molecules made by photosynthesizers are passed through food chains, and cellular respiration converts the organic carbon back into carbon dioxide gas. Cellular respiration does not affect the carbon cycle but is part of the carbon cycle. The 2 carbon cycles. carbon ( C ) is taken up by the plants and trees in the form of carbon dioxide ( CO2 ).
4 difference between Filametous and colonial
The Differences are:
1. Colonial organisms appear as a sphere while Filametous organisms appear as a thread.
2. Colonial organisms is a group of individual organism with a close dependent relationship with other organisms while Filametous organisms form a filametous growth.
3. Colonial organisms form a spherical mass of cells while Filametous organisms form an array of cells with an end to end arrangement
4. Filametous organisms are either sessile or floating while Colonial organisms are generally sessile.
what will happen to a population of organisms that are in an environment with little to no oxygen?
Answer:
Hypoxia occurs when algae and other organisms die from lack of oxygen and available nutrients. Hypoxia events often follow algal blooms. The cyanobacteria, algae, and phytoplankton sink to the seafloor, and are decomposed by bacteria. This lack of oxygen creates dead zones in which most aquatic species cannot survive.
Explanation:
Hope this helps maybe...
Describe the overall main parts of the immune system
List two characteristics of Coelenterata and Nematoda each.
Answer:
What are the two characteristics of Coelenterata?
Characteristics. All coelenterates are aquatic, mostly marine. The bodyform is radially symmetrical, diploblastic and does not have a coelom. The body has a single opening, the hypostome, surrounded by sensory tentacles equipped with either nematocysts or colloblasts to capture mostly planktonic prey.
What are the two characteristics of Nematoda?
Their body is bilaterally symmetrical and triploblastic. They are cylindrical in shape. They exhibit tissue level organization. Their body has a cavity or pseudocoelom.
Explanation:
what type of inheritance do two alleles have if their traits blend together?
Answer:
Explanation:
Codominance is when both dominant traits are expressed, therefore if white was considered dominant and red was also a dominant trait, the petals would have spots of white and red, with no pink. Polygenic inheritance is described by one characteristic influenced by multiple genes, which is not the case in this problem.
_____ is the process by which energy is stored in inorganic molecules is used to produce carbohydrate food molecules
Answer:
Chemosynthesis
Chemosynthesis is used to produce food using the chemical energy stored in inorganic molecules.
that is the answer
Photosynthesis is the process by which energy stored in inorganic molecules is used to produce carbohydrate food molecules.
What is photosynthesis?Photosynthesis is the primary process by which plants, algae, and some bacteria capture and store energy from the sun.
During photosynthesis, light energy is absorbed by pigment molecules in the chloroplasts of plant cells. This energy is then used to convert carbon dioxide (CO2) and water (H2O) into glucose (C6H12O6) and oxygen (O2). The glucose produced during photosynthesis is used by the plant as a source of energy and is also stored as a carbohydrate reserve. The oxygen produced during photosynthesis is released into the atmosphere as a byproduct.
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13. Which muscle allows you to flex your big toe?
Answer:
Flexor hallucis longus
Explanation:
This muscle lies deep inside your leg. It runs down the lower leg all the way to the big toe. It helps you flex your big toe so that you can walk and hold yourself upright while on your tiptoes.
Ellie loves to canoe out at Sebago Lake. One summer day she went out on the water and gave her dad a call
on her cell phone to let him know she was okay. Although she was comfortable out on the water, her dad,
back on land, was suffering tremendously from the heat. Explain why Janet felt cooler than her dad, even
though they were within a mile of each other.
