The loss of tadpole's tail during amphibian metamorphosis and the separation of the digits in human hands during embryonic development are caused by

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?