I'm pretty sure the answer is B
Answer:
the spreading of something more widely.
Explanation:
Alfred Marshal was one of the most influential economists of his time and the author of the Principles of Economics book which was the principal economic textbook in England for long years. During his economic theory development, he borrowed a concept from the marginalists which is the theory of demand and the collective result of buyers who yearns services and products or the concept of scarcity.
Answer:
threaten the food webs of their invaded habitat and effect the ecosystem.
Answer:
A. Thermal Oxidizer.
Explanation:
It helps to destroy hazardous air pollutants and volatile organic compounds at a high temperature and releases them into the atmosphere.