1. When tack welding plastic parts, Technician A does not use welding filler rod. Technician B says that the tack
welds will hold the sides of the part being welded in
alignment. Who is correct?
A. Technician A
B. Technician B
C. Both A and B
D. Neither A nor B

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

thats a little if u want the answer just look it up on google thats what i do haha : )

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

hurricanes form in warm water