Q: Chemical changes occur because of what? Choices: - liquid reactions - evaporation - toxic reactions - chemical reactions A:
chemical reactions

Q: Are zeroes that show only where the decimal point fall significant or not significant? Choices: - neither - sometimes significant - significant - not significant A:
not significant

Q: Q: What is the unsorted pile of material dropped by glaciers called? Choices: - icy deposit - glacial runoff - landfill - glacial till A:
A: glacial till

Question: Q: By applying salt to an icy road, the melting point of the ice is what? Choices: - concentrated - compounded - increased - decreased A:
Answer: decreased

*Question*
Q: What sac, which was sitting on top of the flat embryo, envelops the embryo as it folds? Choices: - uterus - umbilical sac - epithelial sac - amniotic sac A:
**Answer**
amniotic sac

Q: What is the general name for the homogeneous mixture that is formed when a solute dissolves in a solvent? Choices: - Reaction - Combination - Dissolvant - solution A:
solution