P. aeruginosa and other gram-negative bacteria tend to be difficult to control with antibiotics because of their which carry genes that determine resistance to antibiotics.

Gram-negative bacteria have an outer membrane that surrounds the cell wall.

Explanation:

Gram-negative bacteria have an outer membrane that surrounds the cell wall,this bacteria makes gram negative bacteria harder to kill

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.

which of the following is a subsurface event that takes place during the rock cycle?