Mantle material rises in convection currents because heated materials become more dense? true or false

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?