The ecology and life history The ecology and life history of the common frog (Rana temporaria temporaria) ecologylifehisto00sava Year: 1962 20 ECOLOGY AND LIFE HISTORY OF THE COMMON FROG top of a shallow vessel, if they were stimulated by lack of oxygen. This shortage of oxygen was sometimes produced by merely allowing the tadpoles placed in the horizontal tube to exhaust that which was present at first, and sometimes by removing oxygen from the water artificially. When this was done, the Httle animals became restless, and swam upwards. If these movements took them into a better- oxygenated p
The ecology and life history The ecology and life history of the common frog (Rana temporaria temporaria) ecologylifehisto00sava Year: 1962 20 ECOLOGY AND LIFE HISTORY OF THE COMMON FROG top of a shallow vessel, if they were stimulated by lack of oxygen. This shortage of oxygen was sometimes produced by merely allowing the tadpoles placed in the horizontal tube to exhaust that which was present at first, and sometimes by removing oxygen from the water artificially. When this was done, the Httle animals became restless, and swam upwards. If these movements took them into a better- oxygenated part of the vessel, they stopped swimming. This move- ment was therefore a combination of a kinesis (random movement 12 3 4 CENTIMETRES
Size: 1174px × 1703px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
