Michelle is observing a sand sample under a microscope when she finds many perforated shelled organisms. further testing reveals that these shells are made of calcium carbonate. how should she classify these organisms?
they are sarcodines, belonging to phylum heliozoa of protozoa.
they are radiolarians, belonging to phylum ciliata of protozoa.
they are foraminiferans, belonging to phylum sarcodina of protozoa.
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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.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

As an asteroid comes close to earth, it's name will change to? apex