An interval of geologic time not represented by strata in a particular area is a(n)
____________________. Fill in the blank(s) with the appropriate word(s).
hiatus
You might also like to view...
Deserts, tropical forests, prairie grasslands, and coniferous forests are all examples of
a. different species b. ecosystems with the highest biodiversity c. ecosystems with low genetic biodiversity d. Biomes e. Populations
The Sun's declination refers to
A) its altitude, in thousands of feet, above the horizon. B) the average insolation received at the thermopause when Earth is at its average distance from the Sun. C) the latitude of the subsolar point. D) how far the Sun is from Earth. E) the angular height of the Sun above the horizon.
Read the following paragraph to answer the question:The Mt. St. Helens eruption in Washington state in 1980 measured 5 on the volcanic explosivity index (VEI). Only 57 people died from the Mt. St. Helens since most people were warned to evacuate the area prior to the event. Four years later, in 1985, Nevado del Ruiz in Colombia erupted. While only measuring 3 on the VEI, the eruption resulted in 25,000 deaths when unsuspecting residents of local towns were overrun by fast-moving lahars.Which of the following statements about volcano-related deaths best fit the information given in the paragraph?
A. Volcanic eruptions often kill thousands of people. B. The death toll from volcanic eruptions do not always correlate to explosivity, and can be affected by human actions before and after the eruption. C. The death toll from a volcanic eruption is directly related to its volcanic explosivity index (VEI). D. Most volcano-related deaths occur from lahars.
During which of the following periods did Canada and the U.S have the most restrictive immigration laws
A) 1890s-1920s B) 1920s-1960s C) 1960s-2000s D) 1810s-1890s