The genes of an organism make up its ________, and the traits of an organism make up its ________.
A. phenotype; genotype
B. genotype; phenotype
C. phenotype; chromosomes
D. enzymes; genotype
Answer: B
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Our solar system is the center of the universe
a. True
b. FalseWhich of the following changes in conditions represents decompression melting?
A. from C to B B. from A to B C. from B to A D. from D to A E. from B to C
In a desert environment, in which area would surface water infiltrate into the local groundwater system most effectively?
A) Playa lakes with thick mud bottoms B) Streams flowing across an alluvial fan C) Streams flowing across bare bedrock D) Steep-walled mountain streams
The higher the ratio of oxygen-18 to oxygen-16 in the shells of organisms that lived in the sea during the geologic past, the ____ the climate at that time
a. ?colder b. ?warmer c. ?wetter d. ?drier e. ?more humid