The sun is a significant factor that to support life. which of the following earth-sun relationships is not true? the sun's gravity keeps earth from flying off into space. earth is the 4th planet from the sun, which is a perfect distance to utilize the sun's energy. the sun is key to dynamic processes on earth, like weather, climate, and cycling of water. if earth were any farther from the sun, more ice would form reflecting more heat and making the planet similar to mars.

The answer is- 4th planet from the Sun, which is a perfect distance to utilize the Sun's energy

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.

answer; the correct answer is desert plants;