Q: What has increased the greenhouse effect? Choices: - ozone depletion - temperature changes - climate change - human actions A:
human actions

Q: Why are atoms of metals good conductors of electricity? Choices: - break into smaller parts - conserve heat - hold on to electrons - give up electrons A:
give up electrons

Q: Q: What was the first amino acid to be isolated? Choices: - histamine - histon - glutathione - asparagine A:
A: asparagine

Question: Q: What kind of mountainous formation can often be found near trenches? Choices: - earthquakes - caves - craters - volcanoes A:
Answer: volcanoes

*Question*
Q: What is the study of rock strata called? Choices: - biochemistry - chemistry - biology - stratigraphy A:
**Answer**
stratigraphy

(Q).
Q: What causes holes in bread? Choices: - heat - alcohol fermentation - moisture - yeast fermentation A:
(A).
yeast fermentation