Q: Particles with what type of electric charges attract each other? Choices: - similar - same - simple - opposite A:
opposite

Q: We all start as a single cell and soon grow into what? Choices: - nucleus - uterus - egg - embryo A:
embryo

Q: Q: Atomic emission spectra are produced when excited electrons return to what state? Choices: - orbital state - work state - side state - ground state A:
A: ground state

Question: Q: What do you call a type of mixture that has the same composition throughout? Choices: - transition - structure - transfusion - solution A:
Answer: solution

*Question*
Q: What is a double membrane of the nucleus that encloses the genetic material? Choices: - the complex envelope - the cell wall - the nuclear compression - the nuclear envelope A:
**Answer**
the nuclear envelope

(Question)
Q: What do people use from aquifers from springs or wells? Choices: - oxygen - salt - soil - fresh water A:
(Answer)
fresh water