Which statements describes attributes of an artesian well? check all that apply. 1. requires a bucket 2. uses natural pressure 3. uses a mechanical pump 4. is heated by hot rocks or magma 5. has groundwater stuck between impermeable layers

The right answer is 2, 4 and 5

The phenomenon of artesian well is due to the pressurization of an aquifer (natural pressure), when the inclination of the impermeable geological layer which overcomes it forces it below the level of its piezometric line (line of equal pressure of the groundwater). If this layer is drilled, the water rises up the well by gushing, according to the principle of communicating vessels.

Since this deep groundwater can be hot, artesian wells are also used in geothermal heating systems.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.