True or False:All human impact on the environment is negative
A. true
B. false
B
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Which relationship is MOST likely to be observed between species of different classes?
A) A deltaproteobacterium oxidizes hydrogen sulfide into sulfate, which is then reduced by an epsilonproteobacterium. B) An epsilonbacterium oxidizes the hydrogen sulfide produced by a sulfur-reducing deltaproteobacterium. C) A sulfate-reducing epsilonbacterium produces sulfite, which a deltaproteobacterium reduces to hydrogen sulfide. D) Syntrophic metabolism of sulfur by a deltaproteobacterium and an epsilonproteobacterium occurs.
Athlete's foot is caused by:
A. Candida albicans B. Aspergillus fumigatus C. Amanita muscaria D. Claviceps purpurea E. none of the choices provided
Four of the five answers listed below are characteristics of phloem. Select the exception
a. Phloem contains dead cells when tissue is functional. b. Phloem is made of complex tissue. c. Phloem has sieve plates between some cells. d. Phloem includes accessory companion cells. e. Phloem transports sugar.
Increasing density does not affect the body mass of individual organisms
Indicate whether the statement is true or false