Answer: Option (A) is the correct answer.
Explanation:
It is given that the unknown substance is solid at 15 degree celsius. When further heated then heat energy breaks the bond between molecules of the solid.
As a result, temperature remains constant until all the bonds are broken down to convert the solid into liquid.
Hence, the constant 17 degree celsius temperature shows that the solid is melting and after it completely melts then it converts into liquid at 23 degree celsius.
Thus, we can conclude that the statement its melting point is 17 °C, is correct about the unknown substance.
The answer is A. They do not sweep food. They are used for transportation
<u>Answer:</u>
Option(b)
European colonization influenced the lives of native peoples in the South Pacific by forcing them to give up their land to settlers.
<u>Explanation:
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Colonization refer to the acquiring of political control over a territory or region through tact or force. European colonization affected the lives of native people by introducing a fatal disease which wiped out a considerable number of the native population.
Answer:
acidosis
Explanation:
Respiratory acidosis is caused due to hypoventilation because of which gas exchange process is hindered. As a result CO2 produced in body is not excreted adequately and it starts to accumulate. Its concentration in plasma increases and it combines with water molecules in plasma to form carbonic acid. Carbonic acid drops the pH of the blood and thus acidic environment is created. Since this event is a product of faulty respiratory mechanism, it is called respiratory acidosis.
Assuming this is for AP Environmental Science.
There’s the nitrogen cycle that circulates nitrogen around the globe. However, human activities can affect it and add nitrogen into the atmosphere such as deforestation. Plants use nitrogen in order to thrive. If humans cut it down, the nitrogen inside it will come out. Natural forces such as light night can also create nitrogen.
