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Savatey [412]
2 years ago
9

What are some of the abiotic factors that scientists monitor when dealing with stream ecosystems? what are some of the biotic fa

ctors that scientists monitor when dealing with stream ecosystems? what is a "benchmark" in ecology? why are they essential? how does water pollution seem to be affecting diversity in some streams?
Biology
1 answer:
Aleks04 [339]2 years ago
8 0
The abiotic factors of a stream ecosystem involves salt, water, rocks, sediments and trash. This includes the temperature of the water, how much oxygen it contains, how acidic or basic it is, how fast or slowly, and how much sunlight penetrates the surface. A stream ecosystem is the ecosystem of a river viewed as a system operating in its natural environment, including biotic factors and abiotic factors. 
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Madge” was found wandering the streets of New Jersey. She was brought to the attention of a licensed clinical social worker beca
Effectus [21]

Answer:

Madge is likely to have schizophrenia.

Explanation:

Schizophrenia is a mental disorder that causes an individual to suffer delusions and hallucinations that cause totally abnormal and parranoic behaviors.

As has already been said, schizophrenia causes altered and abnormal behaviors, confused thoughts and difficulties in adapting to reality. It is a very disabling disease and can cause an individual to completely lose control of his mental faculties.

Madge's behavior shows that he has confused thoughts, paranoid behaviors and loss of reality, so we can say that he is likely to have schizophrenia.

7 0
2 years ago
Alleles A and a are located on a pair of metacentric chromosomes. Alleles B and b are located on a pair of acrocentric chromosom
Leto [7]

Answer:

See the second attached image showing the gametes from the parent with the location of the centromere indicating the type of chromosome

Explanation:

According to the position of the centromere, chromosomes can be of 4 types namely:

  1. Metacentric
  2. Acrocentric
  3. Telocentric
  4. Sub-metacentric

A metacentric chromosome is a chromosome that has no short or long arm. The arms are equal in length with the centromere joining the two sister chromatids located at the center.

Acrocentric chromosomes have unequal arm lengths with the centromere skewed towards one end of the chromosome.

Telocentric chromosomes have their centromeres at one end of the chromosome.

Sub-metacentric chromosomes have unequal arm lengths but the centromere is not as skewed to one end of the chromosome length as found in acrocentric chromosome.

The only possible gamete from <em>aa bb</em> parent is <em>ab</em>. Recall that the allele <em>a </em>is located on a metacentric chromosome while allele <em>b </em>is located on acrocentric chromosome.

4 0
2 years ago
Mendel investigates stem length, or height in pea plants what if he had investigated human height instead why would his results
WINSTONCH [101]

Human height is one of the traits that belong to traits that cannot easily be placed in discrete phenotypic classes (there is not only tall and short people, there is continuous variation of height between them). Such traits are usually controlled by more than one gene (polygenic traits).

On the other hand, a Mendelian trait is controlled by a single locus.


6 0
2 years ago
In writing On the Origin of Species, Darwin synthesized ideas from other publications, as well as observations he made while voy
algol [13]

Answer:

Principles of Geology

Explanation:

J. Henslow gifted Darwin the first volume of Principles of Geology, written by Charles Lyell. The book explains about the old age of the earth. Accordingly, the slow rate of several geological processes suggests that the earth is very old.

Darwin read the book as the ship was crossing the Atlantic and learned about geological processes occurring over the millions of years. For example, he learned that the earth's surface was not formed by some catastrophic event.

In his book, Lyell explained the slow and gradual geological processes like erosion gave rise to the vast landscapes present on the earth's surface.

Darwin compared the time taken by geological processes to form the earth's surface and reasoned if these millions of years were enough to support the evolution of species.

6 0
2 years ago
Use the numbers 1, 2, 3, 4, and 5 to place the protein creation steps below in the correct order. Ribosome attaches to the mRNA.
antiseptic1488 [7]
1. information is transcribed in DNA to mRNA
2. mRNA leaves the nucleus
3. ribosome attaches to the mRNA
4. tRNA anticodon carries an amino acid that compliments the mRNA codon
5. the chain of amino acid forms a protein
4 0
2 years ago
Read 2 more answers
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