Annelids-In earthworms, respiration is through the skin, but gills are used to exchange oxygen and and carbon dioxide in other types of annelids. Arthropoda-Some arthropods have gills and some have a tracheal system to obtain oxygen and then get rid of carbon dioxide.nnelids-In earthworms, respiration is through the skin, but gills are used to exchange oxygen and and carbon dioxide in other types of annelids. Arthropoda-Some arthropods have gills and some have a tracheal system to obtain oxygen and then get rid of carbon dioxide.
Cistus, with its many hybrids and cultivars, is commonly encountered as a garden flower. The common name rockrose is applied to the species, a name also shared by the related genera Halimium, Helianthemum and Tuberaria, all in the family Cistaceae. The common name gum cistus is applied to resin-bearing species, especially C. ladanifer.
The rose is a beloved flower for its beauty and fragrance with a long history of symbolism and meaning. The ancient Greeks and Romans associated the roses with their goddesses of love Aphrodite and Venus which is probably what has led to the red rose being considered the rose of love in today's modern culture.