The phrase "activities has expanded" is not correct in written English.
The subject "activities" is plural, so it should be paired with the plural verb "have" instead of "has."
Example: "The range of activities have expanded significantly over the past year."
Alternatives: "activities have grown" or "activities have increased."
The demand for engineering solutions to ecosystem level problems has increased as the impact of human activities has expanded to global proportions.
"If the range of our activities has expanded, it's because migration has taken on much more importance in our globalized world," said Gervais Appave, a senior official at the group's headquarters in Geneva.
The rapid growth of anthropogenic activities has expanded cattle and agriculture frontiers into natural habitats, transforming ecosystems into fragmented, semi-natural landscapes [1].
Their wild prey has decreased as herding and ranching activities have expanded throughout their geographic range.
Its service activities have expanded rapidly, and Bayeux is an important tourist centre.
Operating since 2006 from the Siobhan Davies Studios, in south London, its activities have expanded beyond dance classes to include seminars, summer schools and workshops.
As the scope and variety of organized crime's activities have expanded, its need to involve public officials at every level of local government has grown.
The company's activities have expanded to the point where it now manages the complete supply chain for agricultural raw materials in some of the most challenging markets in the world, including Ivory Coast, Gabon, and Uzbekistan.
Research activities have expanded in recent years to include genomic approaches to the physiology and development of plants, the evolution of physiological control systems, water and nutrient physiology, the development of trophic and reproductive systems, and ecological research on the effects of global climate change.
His recent activities have expanded to include code development for more applied areas, including advanced nuclear reactor design, as well as examination of policy implications of various energy production strategies.
Women involved in the informal sector activities have expanded their business whereas those involved in cattle rearing have secured additional income only when they sell their cattle.
