Q: Change in momentum in an object is equivalent to what other measurement? Choices: - gravity - resistance - velocity - impulse A:
impulse

Q: What type of tumor mostly does not cause serious problems and can be completely removed by surgery? Choices: - toxic - persistent - malignant - benign A:
benign

Q: Q: What branch of science is the study of the solid earth? Choices: - palentology - ecology - biology - geology A:
A: geology

Question: Q: Hydrogen sulfide is a noxious and toxic gas produced from decaying organic matter that contains what? Choices: - tin - methane - helium - sulfur A:
Answer: sulfur

*Question*
Q: What are single-celled or colonial organisms that do not have membranebound nuclei? Choices: - arthropods - viruses - eukaryotes - prokaryotes A:
**Answer**
prokaryotes

Q: What is the layer of electrons that encircle the nucleus at a distinct energy level called? Choices: - molecular shell - vortex shell - ions shell - electron shell A:
electron shell