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atroni [7]
3 years ago
12

7. When two or more species live together in a close, long-term relationship, it is called

Biology
1 answer:
alisha [4.7K]3 years ago
8 0
7: symbiotic relationship
8: mutualism 
9: commensalism  

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The southernmost point to which glaciers advanced in North America is marked by the path(s) of the ____. Question 20 options: Oh
Ilia_Sergeevich [38]

Answer:

Option A,  Ohio River and the Missouri River

Explanation:

The historical evidences clearly indicate that Ohio River did not exist before the last ice advances. Before Ohio and Missouri river, the major glacier drainage of the east-west direction happens in Teays River. When ice of the glaciers blocked the Teaya river valley, then the Ohio was formed.

Like Ohio, Missouri river did also not exist before Pleistocene and during that time the largest drainage in North America take place in the Hudson's Bay

Hence, option A is correct

7 0
3 years ago
Most domesticated animals have been bred for specific, favorable traits. Dairy cows are bred for maximum milk production while d
tino4ka555 [31]

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I think I it is selective breeding also known as artificial selection

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3 0
3 years ago
Summarize symbiosis.
Illusion [34]

Answer:

Symbiosis is a close relationship between two species in which at least one species benefits. Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.

5 0
2 years ago
What are the nephrons? How are they utilized in filtration of the blood?
r-ruslan [8.4K]

What are the nephron?

Nephrons are the functional unit of the kidney. There are about two million nephrons in each of our kidneys. Each nephron has a network of glomelural capillaries called  glomerulus where blood filtration occurs, and the renal tabule which is where the filtered fluid is converted to urine.

How they work?

The nephrons act as a filter, cleaning our blood. Unwanted metabolites like urea and creatinine are taken from the blood, as well as high amounts of sodium. The filtered fluid flows from inside Bowman's capsule (epithelial cells surrounding the glomerulus) and from there into the proximal tubule (see attached figure at the end). From the tubule, fluid flows into several other ducts until it reaches the ducts where collectors will empty into the renal pelvis.

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3 years ago
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