Varning: Spela inte in upphovsrättsskyddat material (bakgrundsmusik, film- eller tv-klipp, etc.)
Bild Erkännanden:
grass (https://www.flickr.com/photos/aaronleavy/24456381/) - AaronLeavy - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)
Aphid (https://www.flickr.com/photos/arenamontanus/3557441639/) - Arenamontanus - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)
Worcestershire - Martley - Oak tree (https://www.flickr.com/photos/mwf2005/33750518665/) - muffinn - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)
Ladybug (https://www.flickr.com/photos/kellimatthews/15437948981/) - kellimatthews - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)
Sparrow (https://www.flickr.com/photos/barryskeates/7060965435/) - barryskeates - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)
Caterpillar (https://www.flickr.com/photos/davenport/5878012274/) - tess/ - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)
Bluebird (https://www.flickr.com/photos/dcgardens/16822937892/) - dc_gardens - Licens: Attribution (http://creativecommons.org/licenses/by/2.0/)
Пищевая Цепочка
Пирамида Чисел
Пирамида Биомассы