Answer Happy

Herons' legs grew longer and longer over time until they reached the length they are today due to which of these factors. Check all that apply. Once the genes for longer legs appear, the legs get longer and longer. The increased need to get to deeper and deeper water drove the ancestral birds to grow longer legs. The birds in each generation with the longest legs were most successful in producing offspring. O Long-legged birds mostly mated with other long-legged birds.