True or false. the gleaming metallic appearance of the gateway arch in st. louis, missouri, comes from the stainless steel used in its construction. this steel is made mostly of iron, but it also contains 19% (by mass) chromium and 9.0% (by mass) nickel.

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

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.

Which fact represents evidence for the big bang theory?