It Is Now Virtually Certain That the dominant Cause of Recent

question 84

Multiple Choice

It is now virtually certain that the dominant cause of recent ice ages is

• A)the blocking of sunlight by volcanic eruptions.
• B)variations in Earth-Sun orbital relationships.
• C)changes in radiation output from the Sun.
• D)the blocking of sunlight by galactic dust.
• E)changing ocean salinity and rates of evaporation.

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Definitions:

Ureters

Long, slender, muscular tubes that carry urine from the kidneys to the urinary bladder.

Glomerular Filtration

The process by which urine forms in the kidneys as blood moves through a tight ball of capillaries called the glomerulus.

Proximal Convoluted Tubule

The portion of the renal tubule that is directly attached to the glomerular capsule and becomes the loop of Henle.

Glomerular Filtration

The process by which the kidneys filter blood, removing excess fluids and wastes to produce urine.