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lozanna [386]
3 years ago
14

THIS AQUATICS SCIENCE Someone help it’s a quiz

Biology
1 answer:
Rasek [7]3 years ago
6 0

Answer:

The wearing down of rock into smaller materials such as soil.

I think it is in my opinion

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Parkinson disease is associated with demyelination of CNS neurons. a pyramidal nerve tract lesion. insufficient production of ac
Pepsi [2]

Answer:

The correct option is: <em>a deficiency of dopamine in the substantia nigra.</em>

Explanation:

The substantia nigra is the principal site involved in the physiopathology of Parkinson´s disease.

Cells from this area degenerate and die progressively causing important degeneration in the central nervous system. The cells that die -with no known reason- are those that produce dopamine and proportionate dopaminergic innervation to the encephalon. In fact, almost all the symptoms exhibited by patients with the disease can be explained by the lack of dopamine in the substantia nigra.  

This area uses the neurotransmitter to communicate neurons from the base ganglia. Ganglia are responsible of modulating and modifying movements.

The nigrostriatal system participates in planning and automatic execution of learned movements. When the ganglia activity decreases, so it does the amount and velocity of movements, something typical of the disease.  

3 0
3 years ago
Forensic scientists are trying to find an exact dna match to a sample left at the scene of a crime. the sample from the crime sc
aleksley [76]

The answer is ‘suspect iii has 900 bp and 260 bp sized DNA fragments’

Forensic science utilizes particular sequences of DNA that are unique to people and are cut differently by restriction enzymes. These  techniques are referred to as Restriction Fragment Length Polymorphism (RFLP) and the Short Tandem Repeat (STR) Analysis. In this case, there is an exact match on the crime sample and that of the suspect.






5 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST, 50 POINTS!!!
statuscvo [17]

Answer:

B

Explanation:

The Earth is tilted 23.5 degrees on its vertical axis. During the northern hemisphere's spring and summer, the northern hemisphere is tilted towards the Sun.

6 0
2 years ago
A species of plants has a dominant gene for a tall stem and a recessive gene for a dwarf stem. How do the plant's genes and its
vfiekz [6]
Hello there ^ _ ^

The correct answer is A
Genes and environment are both major influences.

Please trust my answer.
6 0
3 years ago
If false, please make it a correct statement. A rancher uses a particular chicken for breeding purposes because, on average, she
schepotkina [342]

Answer:

b) false

Explanation:

The given statement is false. the selection process used by the rancher is an example of artificial selection and not natural selection.

Artificial selection is defined as the selection process done by humans on the basis of desirable characters while in natural selection the selection is based on the  adaptive characteristics of animals. In the given example rancher choses a desirable character of chicken that lays more eggs.

Hence, the given statement is "false".

8 0
3 years ago
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