Maintaining soil fertility, purifying water, producing oxygen, and decomposing waste are all examples of
A) ecosystem services.
B) biocapacity.
C) species diversity
D) ecological footprint.
E) biodiversity.
A
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Which of the following describe a role that ethylene plays in plant physiology. Check all that apply.
_____ Retarding stem and root elongation. _____ Hastening the ripening of fruit. _____ Inhibition of leaf abscission. _____ Inhibition of lateral bud growth. _____ Accelerates the loss of damaged fruits.
Down syndrome
a. risk of occurring increases with the mother’s age. b. affects boys more than girls. c. individuals rarely live past 5 years old. d. individuals have normal organ and bone development but are mentally impaired. e. disorder in related to a monosomy of chromosome 21
The accompanying figure is a micrograph of what kind of tissue?
a. cardiac muscle b. skeletal muscle c. nerve tissue d. cartilage e. dense connective
situation in which a genetically distinct local population is established by a few colonizing individuals is know as
A. fitness. B. gene pooling. C. genetic drift. D. the founder effect.