Which of the following describes surface tension in water? Choose 1
Choose 1

(Choice A)
A
Surface tension occurs due to ionic bonding.

(Choice B)
B
Surface tension is caused by water molecules repelling one another.

(Choice C)
C
Surface tension allows water to support small objects if they are placed carefully on its surface.

(Choice D)
D
Surface tension of water is weakened by hydrogen bonding.

C

Explanation:

Thisis the tendancy of the water surface to act as athin elastic stretched skin and can therefore support small objects when carefully placed on the surface

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v