In one word
"Interspecific competition"... is the main cause..
i. e, Competition among different species.
<em>Hope</em><em> </em><em>this helps</em><em> </em><em>you</em>
<span>A Neuron is the functional unit of the nervous system that merges collectively to form nerves.
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Answer:
The answer is: 49321-51 and 58661
Explanation:
Report 49321 code for laparoscopy, surgical; with biopsy.
The 51 modifier is used when there are multiple procedures performed on the same session or are performed together.
Code 58661 describes partial or total oophorectomy and/or salpingectomy. Looking up ovarian cystectomy in the index of CPT, you are referred to code 58661 for that portion of the procedure also.
Trisomy 21 (nondisjunction) Down syndrome is usually caused by an error in cell division called "nondisjunction." Nondisjunction results in an embryo with three copies of chromosome 21 instead of the usual two. Prior to or at conception, a pair of 21st chromosomes in either the sperm or the egg fails to separate.