If antarticas only two flowering plants species have spread considerably. Is that a positive or negative??? Please help

Describe three ways in which technology has treat the flu

Which is one way that sinkholes can form? a) tornadoes touch down and destroy trees and brush b) rivera overflow during a storm and wash away nearby land c) rainwater flows away from a depression in the ground d) groundwater dissolves the limestone and other rocks in the ground

Disinfection of countertops, metal, and hard plastics is not best accomplished by the use of because it's very corrosive to hard surfaces. a. alcohol b. a glutaraldehyde solution c. an ultrasonic cleaner d. a phenol compound