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natta225 [31]
2 years ago
14

What is the main difference between the null and the research hypothesis? What is the importance of assuming the null hypothesis

is true?
Biology
1 answer:
Ksivusya [100]2 years ago
8 0

Answer:

The null hypothesis is a general statement that states that there

is no relationship between two phenomenons under

consideration or that there is no association between two groups.

A hypothesis, in general, is an assumption that is yet to be proved

with sufficient pieces of evidence.

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The science of describing, naming, and classifying extant and extinct organisms is:__________
Sloan [31]

The answer is Taxonomy.

The science of describing, naming, and classifying extant and extinct organisms is <u>Taxonomy</u>.

What is taxonomy?

All of the world's plants, animals, and microorganisms are included in taxonomy, which is the science of naming, describing, and classifying species. Taxonomists identify, describe, and classify species, particularly those that are novel to science, using morphological, behavioral, genetic, and biochemical observations. Taxonomy recognizes and catalogs the elements of biological diversity, offering the fundamental information necessary for the management and application of the Convention on Biological Diversity. Unfortunately, our understanding of taxonomy is far from complete. Taxonomists have identified roughly 1.78 million species of animals, plants, and microorganisms throughout the past 250 years of study, but the true number of species is unknown and likely between 5 and 30 million.

Generally speaking, superficial categorization of living things develop according to necessity. Any crawling object, such as a snake, earthworm, intestinal parasite, or dragon, has been referred to, respectively, by the Anglo-Saxon phrases worm and fish. There are more anatomical distinctions between a shellfish and a starfish than there are between a bony fish and a man, despite the fact that the terms shellfish, crayfish, and starfish all include the term "fish." There are many different types of vernacular names. The English robin (Erithacus rubecula) is not the American robin (Turdus migratorius), for instance, while the mountain ash (Sorbus) only superficially resembles a real ash.

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3 0
2 years ago
Each of the following about cells and the cell cycle is true except
alex41 [277]

Answer:

i think iam not sure it is C

3 0
3 years ago
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What is the utility of tissue in multicellular organisms​
snow_tiger [21]

Answer:

But in multicellular organisms, cells are grouped to form tissues. These tissues are specialised to carry out a particular function at a definite place in the body. For example, the muscle cells form muscular tissues which helps in movement, nerve cells form nervous tissue which helps in transmission of messages.

3 0
3 years ago
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​the production of sterile mules by interbreeding between female horses (mares) and male donkeys (jacks) is an example of
insens350 [35]

Answer:

reduced hybrid fertility

Explanation

The formation of mules  from the cross between female horses (mares) and male donkeys (jacks) is an example of reduced fertility because the mules are sterile and they cannot give birth to babies.

Reason:

Because mule cannot produce sperms. This has to do with his genetics. A mule has 63 chromosomes in total. He gets 32 chromosomes from his mom (that is a horse) and 31 chromosomes from his Dad (that is a donkey). As we know, it is very important for reproduction that chromosomes hould be present in two sets with equal numbers.

To reproduce he needs equal number of chromosomes because we know during meiosis chromosomes segregate and half number goes in daughter cells. But in case of mules he has an extra chromosome due to which he cannot undergo correct meiosis and produce sperms. That is ahy he stays sterile throughout his life. This is called reduced hybrid fertility

Hope it helps!

6 0
3 years ago
The greatest source of both nitrogen and phosphorus entering most estuaries, such as chesapeake bay, is ________.
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The Chesapeake bay is an estuary in United States. The presence of nitrogen and phosphorus in the estuary can cause harm to the aquatic species present there.

The main source of nitrogen in the Chesapeake bay is the agricultural runoff. The pesticides and the herbicides used in the agriculture may come along the runoff and get mixed with large rivers and water bodies. The nitrogen from agricultural runoff accounts approximately 40% of the total sources of nitrogen.

Hence, the correct answer is agricultural runoff.

3 0
3 years ago
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