The hole in the ozone layer of Earth has caused negative environmental issues for many years. The decreasing size of the hole in the ozone layer will MOST LIKELY have which effect on Earth's environment? A increased global temperatures
B increased melting of polar ice caps
C increased blockage of ultraviolet radiation
D increased levels of carbon dioxide in the atmosphere

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost