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shepuryov [24]
3 years ago
6

The atmosphere contains about 80%

Biology
2 answers:
balandron [24]3 years ago
7 0
Nitrogen fixation is the process 
ddd [48]3 years ago
7 0


Two processes make the element nitrogen useful to plants:

1) The heat that lightning makes as it moves through the atmosphere and

2) the biological action of a type of plant called legumes.  Examples of

legumes are peanuts and soybeans.

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Which of the following results from cutting down trees
ZanzabumX [31]

Answer:

D

Explanation:

Vegetation on soil protects the soil from erosion because its roots and root hairs help bind the soil particles together. This occurs mechanically by binding soil into crumbs and also chemically by providing organic matter that binds the soil particle into humus that holds moisture. The soil becomes heavy to be carried off by wind erosion. Trees also break the down flow of water hence reducing the capacity of runoff to carry soil sediments.

4 0
3 years ago
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Choose all the answers that apply.
Butoxors [25]

are the leading causes of death worldwide

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Chloride ions, Cl-, follow actively transported Na+ ions from the nephrons into the blood. Would you not expect the Cl- concentr
DerKrebs [107]

Answer:

Bicarbonate ion, HCO3- (which has a similar charge to chloride ions) also follow sodium ions into the blood. Also, potassium ions, K+ are transported into the nephron so some chloride ions and bicarbonate ions remains in the nephron to balance the charge.

Explanation:

Sodium is the primary positively charged electrolyte in extracellular fluid. Most of the solute reabsorbed in the proximal tubule is in the form of sodium bicarbonate and sodium chloride. Water is also reabsorbed in order to balance osmotic pressure

When sodium ions are reabsorbed into the blood, few of the substances that are transported with Na+ on the membrane facing the lumen of the tubules include Cl- ions, Ca2+ ions, amino acids, and glucose. Sodium is actively exchanged for K+ using ATP on the basal membrane.

In the distal convoluted tubule, K+ and H+ ions are selectively secreted into the filtrate, while Na+, Cl-, and HCO3- ions are reabsorbed to maintain pH and electrolyte balance in the blood.

Some chloride ions remains in the nephron to balance the charge of the secreted K+ ions and also due to the bicarbonate ions that are removed.

5 0
3 years ago
Melissa is studying a Gram-stained slide of curd bacteria. She sees many rod-shaped, violet-colored bacteria.What type of bacter
Serhud [2]

The answer is Paramecium.

The paramecium is a unicellular ciliated protozoan. They are often found in fresh water and brackish water areas. They have the elongated shaped that looks like a rod and has the color violet under the stain because it signifies that it is positive.

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How will a punctured lung affect your ability to inspire?
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1) Pneumothorax in this case; a spontaneous pneumothorax can be life threatening cause the lung will eventually cause vacuum used by the lung to fill with air, and as you constantly expand your lung it decreases and collapses. So C is going to be the answer.

2) Acetylcholine is the hormone responsible for the "Rest and digest". It is the direct opposite of the Fight and Flight reaction which is marked in Bronchodilation, Increased HR, and increased BP. B

3) Secretin is responsible for stimulating the release of bile by the liver. Secretin is released by the duodenum, the junction of the stomach and small intestines. B
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