Acompany resource weakness or competitive deficiency:
a. prevents a company from having any distinctive competence
b. usually stems from having a missing link or links in the industry value chain
c. causes a company to fall into a lower strategic group than it otherwise could compete
d. all of the above

D. All of the above.

Explanation:

A company resource weakness or competitive deficiency is basically anything a company lacks or doesn't do rightly which puts it at a disadvantage in the marketplace.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high