Q: Since europeans settled in the united states, about what percentage of topsoil has eroded away? Choices: - 42 percent - 10 percent - 25 percent - 33 percent A:
33 percent

(Question)
Q: Steel, bronze, and brass are examples of what? Choices: - oxides - compounds - chemicals - alloys A:
(Answer)
alloys

Ques: Q: What is the first phase of mitosis? Choices: - metaphase - telophase - meiosis - prophase A:
Ans: prophase

(Q).
Q: What effect does changing temperature have on a system at equilibrium? Choices: - movement - the height - energy - stress A:
(A).
stress

Ques:Q: What do you call an abnormal mass of cells that is dividing improperly? Choices: - bumps - appendages - molars - tumor A:

Ans:tumor

Ques: Q: When this forms underground, volcanoes rise? Choices: - pumice - soil - CO2 - magma A:
Ans:
magma