Ключевые слова: active, agriculture, agronomist, animal, background, biologist, biology, botany, caterpillar, color graded, crop, discover, discovery, ears, ecology, explore, explorer, field, fingers, hand, insect, institute, investigate, learning, male, man, mature, natural, naturalist, nature, object, observe, outdoors, person, pest, plant, reach, research, ripe, satisfied, scarf, science, searching, shaggy, spikelet, study, through, university, wheat, wildlife,