List three common cements. How might each be identified?
What will be an ideal response?
Calcite, silica, and iron oxide are the most common cements. Calcite cement will effervesce (fizz) in contact with dilute hydrochloric acid. Silica is the hardest cement and thus produces the hardest sedimentary rocks. An orange or red color in a sedimentary rock usually means iron oxide is present.
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What is a common feature of federalism?
A) power tends to be centralized at the national level B) many political decisions are left to local and regional governments C) distinctive cultural and political groups are not recognized D) open borders are encouraged E) all decisions are made at the federal level to ensure a smooth and functioning government
The K-T mass extinction is the greatest extinction event (in terms of percentage of species extinct) in Earth's history.
Answer the following statement true (T) or false (F)
Most of the world's forests occur as ________
A) chaparral B) tropical dry forest C) temperate rainforest D) temperate deciduous forest E) taiga and rainforest
Temperatures are usually quite uniform and unchanging with altitude
Indicate whether the statement is true or false