Some variation in the solar radiation striking the Earth's surface is linked to ________ activity
A) sunspot
B) El Niño
C) La Niña
D) glacial
A
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If I wanted to sample some rapidly dividing cells in a plant, a good choice would be
____________________.
a. cells making up fibers b. cells making up wood c. guard cells d. root tip cells
Which of the following choices is not one of the adaptations that allow the kangaroo rat to conserve water? a. The kangaroo rat's nose forms a chamber in which exhaled moisture condenses and is reclaimed
b. The kangaroo rat rests in its burrow during the hot days. c. Metabolic water makes up 50% of the daily water needs of the kangaroo rat. d. The kangaroo rat has no sweat glands.
A human who has no access to fresh water but is forced to drink seawater instead will _____
A) thrive under such conditions, as long as he has lived at the ocean most of his life B) excrete more water molecules than taken in, because of the high load of ion ingestion C) develop structural changes in the kidneys to accommodate the salt overload D) risk becoming overhydrated within twelve hours
Assume that a black guinea pig crossed with an albino guinea pig produced 5 black offspring. When the albino was crossed with a second black guinea pig, 4 black and 3 albino offspring were produced. What genetic explanation would apply to these data?
A) albino and black = codominant B) albino = dominant; black = incompletely dominant C) albino = dominant; black = recessive D) albino = recessive; black = recessive E) albino = recessive; black = dominant