The annual world seafood catch grew from approximately 19 million tons in 1950 to approximately 90 million tons in 1997. as a consequence, there has been a dramatic decline in the commercial fish populations. what could be a possible successful policy solution to the fisheries problem?

develop fish hatcheries and release more fish into the ocean.

ban commercial fishing until sustainable levels have been achieved.

inform the general public to reduce the impact of recreational fishing.

place international limits on the number of fish countries can take.

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

The tasmanian devil, a marsupial carnivore, is facing extinction due to devil facial tumor disease (dftd) which causes bulging cancerous lumps and lesions to erupt around the face and neck — often causing enough deformation to make seeing or eating difficult. dftd has evolved into a contagious cancer, a trait that is unique among cancers. devil mating behavior involves biting around the head and neck, allowing cells from one individual — especially cells from the crumbly dftd tumors — to be transferred to the wounds or face of a new individual. this marsupial was once found across australia, but sea levels rose, isolating the tasmanian population, while the australian population went extinct. what would be an outcome of genetic isolation that is likely to have impacted the spread of dftd? a) reduced territory puts diseased individuals in greater contact with non-diseased ones. b) inbreeding results in less variation in facial features so the cancer is generally fatal. c) genetic isolation has made it difficult for scientists to develop a vaccine against dftd. d) the lack of genetic variation in the immune system of tasmanian devils minimizes resistance to the disease.

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels