What are the two most abundant elements in Earth’s crust?
a. oxygen and aluminum.
b. quartz and feldspar.
c. silicates and carbonates
d. silicon and oxygen.
silicon and oxygen
You might also like to view...
Two phenomena at opposite ends of Mumbai's cultural landscape.
A. Bollywood and Dharavi B. the architecture of Jainism and Hinduism C. manmade deserts and gardens D. Eastern and Western style office buildings
The Atlantic Multidecadal Oscillation (AMO)
A) is believed to be a factor in the frequency of Atlantic tropical storms and hurricanes. B) is believed to be unrelated to the frequency of Atlantic tropical storms and hurricanes. C) is based on land-based temperature fluctuations in North America and Europe. D) is based on land-based temperature fluctuations in eastern Asia.
What is the geologic definition of soil? How does it differ from other definitions?
What will be an ideal response?
A catalyst speeds up a chemical reaction as a result of which of the following?
A) It increases the number of collisions between reacting molecules. B) It makes the reaction more endothermic. C) It makes the reaction more exothermic. D) It provides an alternative reaction pathway.