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SVEN [57.7K]
3 years ago
9

In a plant Cell, an organelle where food is made is

Biology
1 answer:
ra1l [238]3 years ago
3 0
 The answer is Chloroplasts!
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If you have a concern about fluoride in your drinking water, how do you get more information?
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Answer:

Contact the Centers for Disease Control and Prevention (CDC).

Explanation:

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3 years ago
Rocks , soil trees water air and life .How do all the parts affect each other? Give some
IrinaVladis [17]

Explanation:

Answer:

For the complete encyclopedic entry with media resources, visit: http://www.nationalgeographic.org/encyclopedia/weathering/

Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.

Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and erosion. Together, these processes carved landmarks such as the Grand Canyon, in the U.S. state of Arizona. This massive canyon is 446 kilometers (277 miles) long, as much as 29 kilometers (18 miles) wide, and 1,600 meters (1 mile) deep.

Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time. The length of exposure often contributes to how vulnerable a rock is to weathering. Rocks, such as lavas, that are quickly buried beneath other rocks are less vulnerable to weathering and erosion than rocks that are exposed to agents such as wind and water.

For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere. When these chemicals combine with sunlight and moisture, they change into acids. They then fall back to Earth as acid rain.

4 0
3 years ago
An investigator attempting to replicate Pasteur's swan-necked flask experiment has boiled a hay infusion for 1 hour. However, sh
blsea [12.9K]

Answer:

Hay infusion refers to an amalgamation that can be formed by taking samples from different sources like rivers, lakes, ponds, and others. It is one of the best procedures that can elevate the density of the bacteria cell at any specific time interval.  

In the given case, even after boiling hay infusion for one hour, growth was observed in the flask after one day. It can be due to certain factors like the hay infusion may have been comprising some endospore, which is resistant to heat or may comprise some kinds of bacteria that can withstand high temperatures.  

Because of which, even after heating the infusion for one hour, it did not get influenced by the heat and got the chance to grow when it got optimum temperature again at the time when the sample was left as such.

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3 years ago
A minimum change in sensory intensity that is noticeable to an observer and can be coded into neural messages is known as the
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Difference threshold is a minimum alteration in sensory intensity that is noticeable to an observer and can be coded into neural messages. Different threshold is the lowest level of encouragement that is essential to sense that a modification has happened the difference in the intensity between two stimuli that is necessary to yield a just notable difference also known as JND. The just notable difference depends not only on the intensity of the new stimulus but also on the level of stimulation already present which is the more intense the existing stimulus the larger the change must be to be noticeable. 
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3 years ago
Scientists have studied the return of plant life on Mount St. Helens ever since the volcano erupted in
zzz [600]

Answer:

C.

The ecosystem there will definitely go through ecological succession by which the structure of the flora there will evolve over time into forests.

7 0
2 years ago
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