Which formations are features of karst topography? check all that apply. caves sinkholes stalagmites oxbow lakes underground lakes

The correct answers are caves and sinkholes.  

A topography produced due to the dissolution of soluble rocks like dolomite, limestone, and gypsum is known as Karst. It is featured by the underground drainage mechanisms with caves and sinkholes. It has been also recognized for more weathering-resistant rocks like quartzite given the right conditions.  

The examination of karst topography is regarded of prime importance in petroleum geology as many of 50 percent of the globe's hydrocarbon reserves are accommodated in karst organizations.  

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation: