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Biology
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Why is water cohesive?

Cohesion is the attraction of molecules of the same type.Water is cohesive because it is dipolar therefore the positive electrons from the 2 hydrogens are pulled towards the oxygen end making the oxygen e...

Answered by Ugo O. Biology tutor
2779 Views

Why can water act as a solvent for ions?

Solvents are substances that can dissolve other substances.Water can act as a solvent for ions (charged particles/molecules) because it is dipolar (the positive electrons from the 2x hydrogen are pulled t...

Answered by Ugo O. Biology tutor
3824 Views

Describe and explain how fish are adapted for gas exchange.

Fish gills are made up of thin plates called gill filaments, which are covered in structures called lamallae. Both the gill filaments and lamellae provide a...

Answered by Natalie F. Biology tutor
19464 Views

What is the role of the hormone insulin? How does it contribute to diabetes?

Insulin is a hormone released by the pancreas and it helps to control blood glucose levels. In a healthy person, when you have something to eat, the glucose is absorbed and enters your blood stream. In or...

Answered by Ceres H. Biology tutor
2475 Views

How does water play a vital role in sustaining life?

Water has many properties that make it an essential molecule within living things. One main property that water molecules have are hydrogen bonds. These are intermolecular forces that essentially allow wa...

Answered by Biology tutor
3735 Views

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