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castortr0y [4]
3 years ago
9

2) explain the properties of water that allow an insect to walk on water

Biology
1 answer:
Ugo [173]3 years ago
5 0
Cohesion known as water attraction to other water molecules is one of the major properties of water. liquid water has surface tension. this allows for insects such as water striders to walk on water. question number 3 the answer is because ice is less dense then liquid water because the water molecules for a new large structure as they cool down. of course Lakes freeze a course from top down even though the coldest areas are at the bottom. cold water begins to rises when it begins to freeze it accumulates at the top with a sheet of ice. the ice provides some insulation for the water below so that there is typically a significant portion of water under the ice sheet unless it's extraordinary really cold for a very very very very long time. if a lake froze from the bottom up they would more than likely freeze completely
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Which structure would be unaffected by the peripheral nervous system?
Sphinxa [80]
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6 0
3 years ago
If one sample food contains 200 cal in another contains 300 cal, which statement applies?
Advocard [28]

<u>Answer</u>:

The food containing 200 calorie have less potential energy than the food containing 300 calorie

<u>Explanation</u>:

The potential energy content of a food material is its stored energy content which is in the form of chemical bonds. This energy can be measured through the combustion of food material inside a calorimeter. A calorimeter is an instrument which is used to measure the total calorie content of the food or other biological samples by measuring its heat content. A Calorie is unit of energy which is in form of heat.

The food material containing carbohydrates proteins and fats have energy in form of chemical bonds.  On the breaking of bond inside the body, energy is released as in the case of glucose breakdown also known as glycolysis.  

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6 0
3 years ago
A metal body of mass 81 g occupies a volume of 30 cm3. Identify the metal.
Cerrena [4.2K]

Answer:

Aluminum

Explanation:

The density of Aluminum is 2.7 g/cm3

We know the volume and mass of the unknown metal, as density is mass/volume:  81g/30cm3 = 2.7 g/cm3 which is the density of Aluminum :)

8 0
3 years ago
Read 2 more answers
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Strike441 [17]
Myocardium, that's because myocardium simply means 'muscular tissue of the heart'. It is not pericardium or connective tissue as these are only small, specific areas of the heart and a heart attack can cause cells to die anywhere in the heart.
6 0
3 years ago
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Im guessing the increase of GMO foods and excess preservatives and chemicals that may provoke certain food intolerances and allergies.
3 0
3 years ago
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