You are shown 2 samples of the earthes crust . the first is denser than the second . which most likley is oceanic crust

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

Amajor source of energy for your body comes from