Icks to surfaces such
10. you may have noticed that water sticks to surfaces
as glass. which property of water is responsible for this
phenomenon?

The property of makes water which makes it sticks to surfaces as glass is adhesion of water.

Explanation:

Hydrogen bonds in water lead to intermolecular attraction between the water molecules.

Adhesion of water is the intermolecular attraction in between water molecules that make them to hold or stick to other surfaces like glass.

Water spreads and forms a thin filmy layer on glass surfaces due to strong adhesive properties of both water and glass. When adhesive forces are stronger, water forms a concave meniscus on the surface.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.