exogenous

“We don’t have necessarily the final say on whether there’s going to be oil destruction exogenous events all around the world,” said Clayton Seigle, a senior fellow at the Center for Strategic and International Studies.

In Solow’s model, the big driver of growth was technological change, but it was exogenous.

"On our own analysis, the 'extra' cases serve to underline rather than undermine this aspect of the phenomena that are said to be distinctive in those cases of administration of exogenous insulin," they concluded.

"I feel like there's all of these tropes that we hear 'don't avocado toast' and there are exogenous factors that are actually making it impossible for people to buy homes and live the American Dream."

The skin serves as a barrier that restricts the penetration of particles and protects against exogenous threats.