The following marine biologist was aboard the HMS Beagle in 1831:
a. Edward Forbes.
b. Charles Wyville Thomson.
c. Alexander Agassiz.
d. Charles Darwin.
e. Jean-Baptiste Lamarck.
D
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A researcher has been studying lichens in his hometown. Since he began his study, he has noticed several lichens dying in the vicinity of a new factory. What is most likely causing the decrease in lichen populations?
A. the diversion of water sources to the factory (i.e., lichens are drying out) B. an increase in air temperature, the result of CO2 emissions from the factory C. the blocking of sun by the factory (i.e., the lichens aren't getting enough sunlight) D. an increase in industrial pollutants in the area
The _____ includes all of the water on earth
a. abiotic environment b. biotic environment c. hydrosphere d. lithosphere e. atmosphere
Which neurotransmitter functions to stimulate skeletal muscle contraction?
a. acetylcholine b. epinephrine c. dopamine d. serotonin e. GABA
The part of the male reproductive system where sperm mature is known as the ____
a. epididymis b. bulbourethral gland c. testis d. seminal vesicle e. ejaculatory duct