Which of these descriptions best fits the Pleistocene?
a. warm, humid period of swamps and forests when dinosaurs roamed Earth
b. most recent climate interval characterized by warm, stable conditions
c. four major glacial cycles slowly followed by shorter, warmer interglacials
d. complex record of climate changes characterized by cycles of rapid advance and retreat of glaciers
e. a period of steadily increasing temperatures
d
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In the context of agribusiness and the globalization of agriculture, the food supply chain is a way of understanding complex connections between
A) agricultural producers and food consumers. B) foods in the major food groups. C) governments and transnational food corporations. D) monoculture and polyculture. E) consumption, behavior and health.
Space exploration reveals that volcanism cannot occur on other planets or the moons of giant planets in the solar system.
a. true b. false
TEDs are devices to keep seals away from fishnets.
Answer the following statement true (T) or false (F)
The principal controls and influences of temperature patterns include
A) latitude, altitude, land-water heating differences, cloud cover, ocean currents, and surface conditions. B) the distance of Earth from the sun and sunspot activity. C) the seasons and human activity. D) Earth's tilt, rotation, revolution, and sphericity.