The stomach mixes food with the secretions of the stomach wall to form ________
A) gastric juice
B) a food ball
C) chyme
D) acid gastrin
C
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In 1992, mangrove forests along the southern Florida coast and the Florida Keys were severely damaged by Hurricane Andrew. Up to 94% mortality was recorded in some areas, with only the shortest individuals surviving. Scientists have monitored the region and by 2001, the forest canopy had closed and the main species were rapidly gaining biomass. This is an example of:
A. island biogeography B. inhibition. C. the diversity-stability hypothesis D. primary succession. E. secondary succession.
Which of the following is NOT a single gene
trait?
a. cleft chin b. attached earlobes c. dimples d. red hair e. brown skin
What was the first animal cloned from an adult
cell?
a. a sheep b. a dog c. a cow d. a cat e. a mouse
A malignant melanoma is caused by ____
a. heredity b. viruses c. chemical carcinogens d. radiation e. weakened immunity