Why do frogs leave the frog spawn they have laid?
Answers
Common Frogs tend to use smaller, shallower ponds and lay their spawn in the edges where they will get plenty of light and warmth. ... If a pond has been removed amphibians may lay their spawn in puddles, water features or other unsuitable areas.
Answer:
Ammonotelic are the organisms which excrete nitrogenous wastes in the form of ammonia while ureotelic animals excrete nitrogenous wastes in the form of urea.
Ammonia is more toxic than urea and needs lots of water to excrete from the body.
Tadpole lives in water. Hence, it can rapidly excrete ammonia due to availability of lots of water.
Adult frog lives mainly on land but lives in water also. Hence, they excrete urea which is less toxic than ammonia and release it in the form of concentrated urine with less need of water.