Which of the following is the best description of the cane toad’s introduction to australia?
a. it was a successful biological control mechanism for cane beetles.
b. it was a failed biological control mechanism for cane beetles.
c. it was a successful method for reducing freshwater crocodile populations.
d. it was a failed attempt to eradicate south american fire ants.

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.

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center

All eukaryotic cells contain small bodies called