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antiseptic1488 [7]
3 years ago
9

What are some sources of nitrogen

Biology
1 answer:
emmainna [20.7K]3 years ago
5 0

The main source of nitrogen include: atmospheric precipitation, geological sources, agricultural land, livestock and poultry operations and urban waste. Agricultural emissions show a strong increase due to the application of fertilizer to agricultural soils, grazing of animals and spreading of animal manure.

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Explain the process by which an attack of hay fever follows exposure to pollen
Bezzdna [24]

<span>Hay fever is a manifestation of allergic reaction from pollen, which is prevalent during haying season. Hay fever is commonly known as allergic rhinitis caused by an oversensitive immune system, particularly the lymphocytes, leading to a misdirected immune response. The body undergo a sensitization when one develops IgE antibodies and develop a strong TH2 response against pollen. Then, this newly develop IgE antibodies sticks to basophils and mast cells with no signs and symptoms yet. However, when one is expose again to pollens, mast cells will be activated and release mediators who are responsible for immediate vascular and smooth muscle reaction. After this, local clinical manifestation of hay fever will be observed. </span>

4 0
3 years ago
Compared to freshwater fishes, marine fishes: drink seawater and produce a large volume of urine. do not drink seawater in an ef
Andre45 [30]

Answer:

The correct answer is - tend to lose water by osmosis since their internal salt concentration is lower than that of seawater.

Explanation:

In freshwater fishes, the body of fishes has a higher salt concentration inside their body than the surrounding water, water enters through the osmosis process. Without any active regulation of this process, fishes would swell and get bigger and bigger. They have specialized cells called chloride cells in gills to take ions from water as they do not have kidneys.

In contrast, the marine fishes have a lower salt concentration in their body than surrounding water of sea or ocean and they lose water continuously and to compensate for this they need to drink water regularly.

6 0
3 years ago
Of the choices below, which best describes the effect predation has on the predator/prey organisms involved in the relationship?
steposvetlana [31]

Answer:

The correct answer is C. benefit ... harmed

Explanation:

Predation is a type of interaction between two individuals in which one individual gets harmed which is called prey and another organism who is predator gets benefitted.

In predation, the predator kills its prey and consume it to survive. For example, Lion is a predator and deer is the prey so during predation lion kills the deer and consume it so here lions get benefited by consuming deer and deer is harmed as it lost its life. So the correct answer is C. benefit ... harmed.

8 0
3 years ago
TRUE OR FALSE<br> Oxygen is absorbed into the bloodstream in the trachea?
Arte-miy333 [17]

False. Oxygen is absorbed in the alveoli sacs of the lungs.

Upon inhalation Air must first pass through the larynx and down to the trachea, which then splits off into two separate bronchial tubes, the bronchial tubes divide into smaller air passages known as the bronchi and those into even smaller bronchioles. The bronchioles end in tiny sacs called the alveoli which transfer the oxygen from the inhaled air to the bloodstream.

4 0
3 years ago
Read 2 more answers
What evidence must be considered when determining whether or not a trail is adaptation?
Dmitry [639]
An adaptation is a trait that "evolved" for a particular condition that allows the animal to survive. Something is adaptive if it is a useful trait but not necessarily one that occurred in response to a particular selection pressure. Basically a trait is an adaptation if it is the product of selection, and adaptive if it is beneficial in the present time.

Read more on Brainly.com - brainly.com/question/1946228#readmore
4 0
3 years ago
Read 2 more answers
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