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aev [14]
3 years ago
10

Under what conditions is an antigen called an allergen?

Biology
1 answer:
IRINA_888 [86]3 years ago
6 0
When it triggers an abnormal or vigorous immune responce, treating the antigen that would normally cause no threat as something harmful.
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The Old Faithful geyser found in Yellowstone Park is an example of _____. a feature resulting from earthquake activity a feature
Monica [59]

The given blank can be filled with a feature resulting from hot volcanic rock.  

The geysers refer to the rare characteristics on Earth, only about 1000 of them prevail, and more than half of those are situated in Yellowstone. For a geyser to develop, there must be a source of volcanic heat, enough groundwater, and a geologic plumbing system via which the heated water can escape.  

The absconding of water takes place when the groundwater is heated by the hot volcanic rocks. The intensifying steam bubbles push the water above via the fissures in the rock until they overflow from the geyser.  

With the absconding of the top layers of the water, the pressure on the hotter waters below diminishes, leading to a violent chain reaction of explosions, which expand the volume of the rising boiling water by up to 1500 times or more.  


4 0
3 years ago
The rate of water loss from the leaves of a potted plant can be measured by determining the mass of the plant at one-hour interv
marusya05 [52]

Answer:

A potometer measures water loss from leaves. A bubble potometer measures the rate of water loss from a plant by transpiration. A weight photometer measures the amount of water lost by a plant through transpiration. The washing line method is used to prove that most water loss occurs from the lower surface of the leaf.

potometer' (from Greek ποτό = drunken, and μέτρο = measure), sometimes known as transpirometer, is a device used for measuring the rate of water uptake of a leafy shoot which is almost equal to the water lost through transpiration. The causes of water uptake are photosynthesis and transpiration

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3 years ago
Which statement best describes a property of carbon that makes it particularly suited to forming biological macromolecules?
kirill [66]
Carbon is relatively small. non - bulky atom that shares electrons easily .

Hope this helps!!!
3 0
3 years ago
scientific explanarions are based on empirical data and evidence. which of the following is not a scientific idea
svet-max [94.6K]
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