Why does the aquarium trade contribute to the introduction of nonnative species? a. exotic species can escape or be released into local ecosystems. b. aquarium owners do not always understand how ecosystems interact. c. nonnative fish are shipped worldwide for aquariums. d. all of the above

Why do german shepherds shed so much

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.