The Texas blind salamander (Eurycea rathbunl) lives in the Edwards Aquifer region around San Marcos. Along with other species the salamander lives in total darkness in the underground crevices and caves of the aquifer region. The table lists some of the organisms that live in this environment and their food sources. Edwards Aquifer Cave Inhabitants Food Sources Texas blind salamander Blind shrimp Snails Amphipods Intestinal roundworm Blind shrimp, amphipods Protozoa, fungl, detritus Detritus Detritus. Texas blind salamander In an energy pyramid for these aquifer cave dwellers, which of the following would be placed at the bottom? A Snails C Protozoa B D Texas blind salamanders Blind shrimp​

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.