africa africanpeoples ages4-8 agriculturaldiseases airpollution alternative alternativemedicine analysis animals antiquities arthropods atmosphericscience backpacking behaviors biodiversity biology bird botany butterflies climate climaticagriculture climatology climatologyinenviromentalscience complementarymedicine conservationinevironmentalscience conservationinforestry conservationpolicies critters descriptions desertecology deserts diseases ecologicalmanagement ecologies ecology economicconditions ecosystems entomology environment environmentalaspectsofagriculture environmentalconservation environmentaleconomics environmentalimpact environmentalscience ethnobotany ethnosciences fairytale fall family fences fleece foreignsubstances forestpolicies forestry forests gardening general genetics geochemistry guided habitats habitatsinenvironmentalscience herbalmedicine hiking histor historicsites history horticulture humanity icanread!myfirst illustrations india insects interdisciplinaryaspectsofenvironmentalsciences juvenilefiction ladybugs lambs latinamerica laugh laughing lifesciencesexperiments littlesister maryhadalittlelamb mayas medicalanthropology mental meteorology mice miscellaneous miscellaneousenvironmentalpolicies miscellaneousmexicanhistory miscellaneouspollution nationalparks nativemesoamericanpeoples naturalliterature naturalresources naturalterrain naturalterrian nest oceanography paleontology paperindustries parasites peoples pests pets physicalanthropology physiology places plantecology plants play playing pollutants protectionofhabitats protectionpolicy rabbit reading regional relationshipwithnature reproduction rivers school seasons sharedreading snowy soilmanagementinagriculture soils southernafrica spiritualhealing spring stephenholmes stone studies summer teacher thecaribbean travel travelessays travelguidebooks treehouse trees treesinenvironmentalscience utah walking washington white winter wooden