Kumar is studying how Earth is warmed by sunlight. The following shows his model of the sun and Earth.
Which process is mostly responsible for warming the soil in Kumar's model?
1. Conduction between the lamp and the soil causes the soil to warm.
2. Convection currents between the lamp and the soil cause the soil to warm.
3. Expansion of particles in the soil causes the soil to warm.
4. Radiation from the lamp reaches the soil and causes the soil to warm.

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 describes the changes in the earths motion?

In this picture, groups of pigment that capture light energy are located on the