What were the consequences of ice-age climate for the parts of the continental U.S. not covered in ice during the last ice age?
What will be an ideal response?
Cooler climates produced different vegetation everywhere than what is seen today. River valleys were choked with outwash sediment and valleys filled with alluvium that remains visible as high terraces that formed when the streams incised their beds in later times. Fine silt was blown from the alluvial deposits and deposited as widespread loess to form fertile soils in the central United States. Cooler and wetter climate conditions in the southwestern U.S., compared to today, caused deep lakes to form within closed-in valleys.
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A population's age structure generally ________
A) cannot predict possible species declines in numbers B) has no inherent value for predicting growth C) will represent sizes of individual organisms D) is correlated with the different niches the population occupies E) indicates the relative numbers of individuals of different ages within a population
Paleontology is the study of ________
A) prehistoric human history B) paleo meaning old, and ontology referring to philosophical study of nature, so paleontology is the study of old nature C) ancient life D) none of the above
What are the Milankovitch cycles?
A) the movement of Earth that causes climate change B) the movement of ocean water that causes climate change C) the changes in the amount of carbon being absorbed by the ocean D) the changes in the amount of radiation being absorbed by the atmosphere
Which of the following statements accurately describes the distribution of cellular phones and televisions throughout the world?
What will be an ideal response?