In this activity, you will write a 500- to 750-word research paper on adaptation in organisms. You will compare and contrast the adaptability of two organisms that live in very different environments. You will conduct research to find credible scientific sources that support the comparison. Throughout this activity, follow the provided links for help with researching and writing your paper. Start by reading this guide to the research process. Part A Decide which two organisms to compare in your paper. Choose one organism that lives in the tundra and another from a desert region so that you are working with two contrasting environments. Read about the two habitats, and describe their characteristics. Here are a few characteristics to consider: average temperature seasonal changes average rainfall or snowfall vegetation land features

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.

The negative impacts of nonnative species generally outweigh the positive impacts

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has