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Svetllana [295]
3 years ago
8

Found evidence that the continents were joined together at one time.

Biology
1 answer:
nikdorinn [45]3 years ago
7 0
Alfred Wegener, is who proposed the idea of Pangaia
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Put the steps of the nitrogen cycle in order, starting with the step that
Pepsi [2]

Nitrogen Cycle steps:

N molecules breaking apart via nitrogen-fixing bacteria.

Animals ingest nitrogen in nitrate-containing food after plants use nitrogen-containing compounds.

The organic matter decays via decomposers

N2 is formed via denitrifying bacteria.

Explanation:

The nitrogen-fixing bacteria removes atmospheric nitrogen by fixing nitrogen through nitrification. The atmospheric nitrogen cannot be absorbed by plants and hence has to be converted into nitrates. This conversion takes place by nitrifying bacteria present in leguminous plants.

Animals (herbivores) consume the plants that have absorbed nitrogen/

When these animals die, decomposing bacteria acts on the dead organic matter, decomposition takes place through ammonification, converting the organic nitrates into ammonia

The nitrates are converted back again to nitrogen by the action of denitrifying bacteria.  

The nitrogen thus formed is released to the atmosphere

5 0
3 years ago
Which of these statements about eicosanoid synthesis is true?
Blizzard [7]

Answer:

A) An early step in the path to thromboxanes is blocked by ibuprofen.

Explanation:

Eicosanoids are signaling molecules that are produced by oxidation of  arachidonic acid or other twenty-carbon essential fatty acid. Eicosanoids are involved in immune responses: they inhibit inflammation, allergy, fever, they also regulate pregnancy, childbirth, control cell growth..

Synthesis of  prostaglandins, prostacyclin and thromboxane (subfamilies of eicosanoids) is inhibited by aspirin and some anti-Inflammatory drugs such as ibuprofen and naproxen.

6 0
3 years ago
Describe the role of algae in marine biome
dlinn [17]
They are the energy base of the food chain for all aquatic organisms, without them all aquatic organisms would most likely parish.
4 0
3 years ago
Mad cow disease is caused by deformed proteins called prions. The disease is spread when meat from an infected cow is eaten. Pri
Vesna [10]

Answer:

Prions, however, are not living organisms. Prions are infectious proteins. For unknown reasons, these proteins refold abnormally and cause a domino effect in surrounding proteins which in turn mutate into stable structures

Explanation:

This is a pic of Prions

4 0
2 years ago
You water three sunflower plant with salt water. Each plant receives a different concentration of salt solutions . A fourth rece
Lorico [155]

Answer:

Independent - Water/Type of water (salt and pure)

Dependent - Height of plant

Controlled - Amount of water

Explanation:

Independent is what the experimenter manipulates (in this case being the type of water.)

Dependent is what the experimenter measures and is a result of the independent (in this case being the height of plant)

Controlled is what you are trying to keep the same (in this case the amount of water you give each plant.)

6 0
3 years ago
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