Environmentalists are monitoring an area of tropical forest that is being deforested because of human activities. The graph here shows the scientists'
predictions based on the data they have collected.

How is the ecosystem likely to change as a result? Select the two correct
answers.
A. Soil enrichment
B. An increase in oxygen
C. Loss of habitat
D. Loss of species

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.

Explain the significance of meiosis in sexual reproduction

Which diagram best represents the chromosomes that would be found in a two new skin cells produced as a result of this process?