Incinerator ash is commonly contaminated with highly concentrated toxic substances.
Answer the following statement true (T) or false (F)
True
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Devil's Tower probably represents
a. a sedimentary debris flow. d. a granite batholith. b. the eroded neck of a volcano. e. a plutonic sill. c. vertically tilted metamorphic rocks.
What are the stinging cells present in cnidarians?
A) Cnidoblasts B) Spicules C) Nettles D) Gastrodermis
Tropospheric ozone ________
A) binds with hemoglobin, preventing binding with oxygen in red blood cells B) is produced through the interaction of UV light with nitrogen oxides and carbon-containing compounds C) is a primary pollutant D) is caused by poor farming techniques E) protects Earth from most of the harmful UV radiation
The last glacial minimum ended approximately 15,000 years ago.
Answer the following statement true (T) or false (F)