NOT KNOWN DETAILS ABOUT RIDDLES

Q: My skin is environmentally friendly and slippery, I've four legs and webbed ft, I hop on land and swim underwater, I like bugs and very little fish to take in. What am I?c) The lacking amount is 17. Each number in the circle could be the sum with the numbers in the other quadrant. In such cases, the figures are 8 and 9 — added jointly can make