In Chapter 24, Scout learns a little more about what it means to be a "lady." What does she learn that is ironic? What is ironic about her new, changing role in the household?

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.

make   gliitsh plesea   !

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

d. planting trees

the trees take in carbon to make oxygen.