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artcher [175]
3 years ago
5

The organisms in a community are independent. what does this mean?

Biology
1 answer:
Olenka [21]3 years ago
3 0

It would mean that the organisms rely on each other for survival.

Hope this helps (:

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Degeneration of the dopamine-releasing neurons of the ________ is the ultimate cause of Parkinson's disease. Degeneration of the
slavikrds [6]

Answer:

a. substantia nigra

b. substantia nigra (it is repeated)

Explanation:

Parkinson's disease is a neurodegenerative disease that is caused by the death of neurons that release the neurotransmitter dopamine in the <u>substantia nigra</u>, or locus niger, -a region of the brain that regulates brain circuits that give the 'orders' to initiate voluntary movements- .

The lack of this neurotransmitter leads to the occurrence of the main symptoms suffered by patients: decreased movements, muscle stiffness, postural instability and tremor. These failures are generated by the abnormal way in which neurons work in the absence of dopamine through a mechanism that is not known in depth.

It is the second most frequent neurodegenerative disease, after Alzheimer's disease, with a prevalence of 2% in people over 65 years. The characteristic symptoms of stiffness, bradykinesia and tremor are associated with losses of neurons in the substantia nigra and dopamine depletion in the striatum. There are large cytoplasmic inclusions, called Lewy bodies, which are the pathological mark of the disease and appear predominantly in neurons that contain melanin of the nigra substance. Genetic studies in a subgroup of families with Parkinson's disease with autosomal dominant inheritance found a locus on chromosome 4q-21 23 and a mutation in the gene that encodes a synaptic protein, α-synuclein.

7 0
3 years ago
What causes agal bloom
Alika [10]

Answer:

Sudden Influx of Nutrients

Explanation:

Algal blooms are caused by a sudden influx of nutrients, coupled with already warm temperatures.  This can happen from fertilizer runoff from farms or chemical industry waste.  They allow algae to quickly grow, but the water reaches carrying capacity.

3 0
3 years ago
A substance that releases hydrogen ions in water is a base.<br> a. True<br> b. False
Vlada [557]
It is true, it does release hydrogen ions in a water base.
8 0
3 years ago
Read 2 more answers
The microscope you are coloring and labeling is what type of microscope?
ryzh [129]
<span>A light microscope uses focused light and lenses to magnify an object. Light microscopes come in several forms. (1) Simple light microscopes use a single lens to magnify an object and cannot reach high magnification just like a handheld lens whose highest clear magnification in the best conditions is 25x. (2) Compound light microscopes use two sets of lenses - an objective lens and an eye piece. This is the type of light microscope whose magnification power reaches between 1000x and 2000x.</span>
8 0
3 years ago
How should “free water” have been administered to the patient?
Firdavs [7]

Answer: Via ice chips or water, although not appropriate for all patients.

Explanation:

Patient is allowed to drink water btwn meals (beginning a minimum of 30 mins after meals); oral care must be done prior to consuming water; patient should be upright and use appropriate swallowing strategies.

3 0
3 years ago
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