Carl knows that water moves through different kinds of soil at different rates. how easily water moves through a soil is known as permeability. carl decides to compare the permeabilities of different soil types. to do this, carl takes five identical flower pots with holes in the bottom and fills each one with different soil: rocky, gravely dirt from the side of the road potting soil from the store clay soil from a nearby creek sand from a store dirt from his own backyard carl pours one liter of water into each pot and measures how much water flows out of the bottom in one minute. which of the following variables should be kept constant during this experiment? a. the amount of water that comes out of each pot b. the amount of water that goes into each pot c. the permeability of the soil in each pot d. the kind of soil in each pot
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Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?
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Carl knows that water moves through different kinds of soil at different rates. how easily water mov...
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