Biogeography is the scientific study of the distribution of species and ecosystems throughout geographical space and over periods. It combines information from biology, geology, and climate science to understand where life exists, where it did in the past, and where it might in the future.
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. It examines patterns of species distribution on Earth and their historical changes. For instance, if we take the example of kangaroos being native to Australia, it's the field of biogeography that explains why such a condition came to be. By merging information from different scientific fields such as geology, biology, and climate science, biogeography can tell us where life exists now, where it existed in the past, and where it might exist in the future. Biogeography is broadly divided into two types: Historical Biogeography (which focuses on long-term, evolutionary timescales) and Ecological Biogeography (which focuses on shorter, ecological timescales). It's a key element in many biological and geographical studies, as understanding the spatial distribution of species can help in conservation planning and can provide insight into the processes of evolution & adaptation.
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your most reliable answer would be lithosphere
provides a basis for disproving this claim?
It can be deduced that the cell theory that provides a basis for disproving this claim is that all cells are from existing cells.
It should be noted that a cell theory simply means that all biological organisms are made of cells.
In this case, some people believed that fleas actually came from dust. This was proved wrong as the cell theory states that all cells are from existing cells.
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Answer:
There are no options to this question, however, it can be answered. The answer is:
All cells arise from previously existing cells
Explanation:
The universal cell theory was proposed in 1830's by three scientists viz: Rudolf Virchow, Mathias Scleiden, and Theodor Schwann. The cell theory consists of three major components which are generally accepted and used till date. The components are:
- All living things are made up of one or more cells
- The cell is the fundamental and basic unit in every living thing.
- All cells arise from previously existing cells via cell division
According to this question, many unscientifically based claims including the believe that fleas actually came from dust have been made. This claim has been DISPROVED by the part of the cell theory that states that "All cells arise from previously existing cells via cell division". Hence, fleas do not arise from dust but from other cells according to cell theory.
Answer:
Pulling apart or separation of sister chromatids
Explanation:
Meiosis is a type of cell division that results in four daughter cells with each having half number of chromosomes as the parent cell. It is the cell division that leads to formation of gametes to enable sexual reproduction. Division occurs twice during meiosis because before the two halves of a duplicated chromosome called sister chromatids separate, it still needs to separate homologous chromosome, which is a similar but non-identical pair of chromosome received from both parents. Hence, meiosis occurs in a two step division process i.e. Meiosis I and Meiosis II.
Meiosis II is the mitotic division of each of the haploid cells produced in meiosis I. Note that, homologous chromosomes separate in anaphase I of meiosis I, and further undergoes cytokinesis (division of cytoplasm) to produce two haploid (reduced number of chromosomes) daughter cells.
During anaphase of meiosis II, the individual chromosomes (sister chromatids) separate at the centromeres (point of attachment between two sister chromatids). The separated chromosomes are pulled apart towards each pole of the cell by the spindle fibres.
Answer:
The correct reason would be "the levels of dissolved oxygen at the mouth of the river and at the source of the river".
The mouth of the river is the region where it flows into the ocean, lake, another river, reservoir, sea et cetera. The level of dissolved oxygen in this region is too low to support great biodiversity.
Organisms like catfish and carp can survive here due to their low oxygen demand. For example, catfish can survive in water with an oxygen content of 2.5 parts per million.
In contrast, the level of dissolved oxygen is higher at the source of the river. Organisms like trout are found here due to their high oxygen need. For example, rainbow trout require minimum 5-6 parts per million dissolved oxygen for its survival.
If the question was about which part of the body it was discovered in it was in the blood cells
B. Amino acids contain oxygen.
C. Amino acids contain carbon.
D. Amino acids contain nitrogen.
Answer:
Starch is a polysaccharide which comes under carbohydrates.The incorrect option here is option D which says the basic constituent of amino acid, that contains nitrogen as it is not found in starch.
Explanation:
What is the basic component of starch?
Starch is a carbohydrate. Carbohydrates are of different types like monosaccharides, disaccharides, oligosaccharides, and polysaccharides.A monosaccharide is the basic simplest form of carbohydrate and a polysaccharide is the complex one.
The basic formula of any carbohydrate contains, Carbon, hydrogen and Oxygen. The polysaccharide, as the name suggests, it has many glucose molecules linked together as a chain.
Hence, starch is a polysaccharide found in plants. It is stored in the form of a storage molecule in plants. It does not contain nitrogen as its structural component.
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Answer:
D.
Explanation:
Nitrogen is the major atom that is present in amino acids that are not present in carbohydrates.