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daser333 [38]
3 years ago
7

FIRST ONE WHO ANSWERS THIS QUESTIN WILLLL BEEE MARKED BRAINLIEST.

Biology
2 answers:
svet-max [94.6K]3 years ago
8 0

they use the waves that are formed to see and learn about the different layers there are in Earth's crust

Rudiy273 years ago
7 0

The answer to this question is

"Scientists can tell by observing the seismic waves that are recorded all over the surface of the earth from distant earthquakes. The seismic waves are reflected (bounced off) layers of different density, and they are refracted (bent) when they enter layers of different density."

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it might be cell membrane

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True or false : During a chemical change, the form of a substance is altered, but not its identity.
Alika [10]
False have you ever tried getting some wrinkles in your brain
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If methods were developed to improve the efficiency and effectiveness of one system, what effect might that improvement have on
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Dispersal of seeds is essential for proper growth.Give scientific reason
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Four students provide their teacher with an explanation of why photosynthesis is considered a chemical change. Luke: Photosynthe
kenny6666 [7]

Answer:

The best explanation was provided by the student Tara who said: "Through photosynthesis, the CO2 and water are changed into new substance, glucose, therefore it is considered a chemical change".

Explanation:

A chemical change is one which is not easily reversible and which results in the formation of new subsatances.

For example, in photosynthesis,a new substance, glucose is formed from the original substansubstances, carbon dioxide and water. Also, the reverse process of the formation of carbon dioxide and water from glucose is not easily obtained in plants.

From explanations provided by the students :

Luke does not give any explanation of the process but only an observation

Jackie's explanation does not state the main reason why a chemical change differs from a physical one.

Tara, gives the best explanation as the reason why a change that occcured is a chemical change is clearly stated.

Skyler does not state the main reason why photosynthesismis a chemical change as well, because even physical changes like evaporation of water involves solar energy.

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