A team of engineers is designing a habitat for astronauts to live in on the Moon. Which statement describes a criterion of this project?
A. The habitat must cost less than $700,000 per year to maintain.
B. The habitat must have an airlock that lets astronauts out onto the
Moon's surface.
C. The habitat must be built entirely from materials brought from
Earth.
D. The habitat must use fewer than 200,000 kg of materials.

If you could drill a hole straight to the center of the earth, and keep track of what the hole is going through, youwould find: a) you would go through one sort of material, and then a different, denser material, and then a still-different, still-denser material, because the planet is made of concentric layers, sort of like an onion.b) you would go through one sort of material all the way to the center, because the planet is all mixed up.c) if your hole started at the north pole, you would go through different layers of different materials, but ifyour hole started at the equator, you would go through one sort of material all the way to the center.d) if your hole started at the equator, you would go through different layers of different materials, but if yourhole started at the north pole, you would go through one sort of material all the way to the center.e) you would strike diet pepsi when you got to the center.

How would you find the measure of one interior angle

All of the following occurred due to the invention of the railroad except