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the consists of all the organisms on earth and the areas in which they live.
geosphere
atmosphere
hydrosphere
biosphere

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? a) catalysis b) metabolism c) anabolism d) dehydration e) catabolism

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred