Caleb is an inventor who has designed a new kind of fishing net. He is looking for a strong, flexible material that can be used to hold a lot of weight and will not dissolve in water. He wants a synthetic material so he does not have to depend on harvesting a natural product. NEED CORRECT
Which material would be best for Caleb’s invention?

cellulose
nylon
polystyrene
vulcanized rubber

Select the correct answer from each drop-down menu. daniel and sanya are scientists. daniel is studying whether the increasing frequency of tropical storms is affecting coastal erosion. sanya is investigating whether the discharge from industrial plants has any impact on the ph concentration of freshwater swamps in the surrounding area. which fields of science are daniel’s and sanya’s studies most closely related to? daniel’s field of study is related to science, and sanya’s field of study is related to .

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0