The glacial conditions persisted until the __________, which marks the end of the Ice Age and the beginning of the Holocene Epoch that we live in.

Paragraph5: Milankovitch attributed the onset of the Pleistocene Ice Age to variations in threeparameters of Earth's orbit. The first of these is orbital eccentricity, which is the degree that Earth'sorbit departs from a perfect circle in its orbit around the Sun. The orbit varies from nearly a circle toan ellipse (an oval-shaped, elongated circle) and back again in about 100,000 years. Thiscorresponds closely to 20 warm-cold climatic cycles that occurred during the Pleistocene. Thesecond parameter is the angle between Earth's axis and a line perpendicular to the plane of theecliptic (the path along which the Sun appears to move). This angle shifts about 1.5 degrees duringa 41,000-year cycle. The third parameter relates to another complicated movement pattern with a23,000-year cycle. Milankovitch proposed, and now many scientists agree, that the interaction ofthese three parameters provided the triggering mechanism for the glacial-interglacial episodesduring the Pleistocene.5. The word “this” in the passage refers toA: the variation in three parameters of Earth’s orbitB: the amount of time it takes for Earth to orbit around the SunC: the length of the Pleistocene AgeD: the variation of Earth’s orbit from a circle to an ellipse and back to a circle

Pliocene and Pleistocene climatic conditions

Over the last 700,00 years, how many glacial periods have there been?

around 1310 C.E. Europe went into a climactic phase known as the "Little Ice Age"?Group of answer choicesTrueFalse

What do geologists think happened as the last ice age ended?A.A mass extinction occurred.B.Sea levels rose over 300 feet.C.Dense forests grew for the first time.D.Glaciers advanced worldwide.