Sinkholes can form when
a. minerals dripping from a cavern ceiling form stone pendants
b. rain water containing carbon dioxide dissolves underground rock
c. the water table rises due to flooding
d. streams drop settlement as they enter lakes

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

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm