An invasive fish species was accidentally introduced into a river. at first, it experienced a sudden surge in its population. then it experienced a steady decline. which statements give plausible reasons for this trend?

a. it became prey to certain organisms in the river.

b. it lacked adaptations suitable for that particular ecosystem.

c. it had no predators in its new environment.

d. it had few organisms to compete with for resources.

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

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.