Nuclear binding energy is necessary to overcome which of the following? A.
Einstein's mass defect

B.
kinetic energy of the nucleus

C.
repulsion of the protons

D.
weak nuclear force

C.

repulsion of the protons

Explanation:

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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; i believe the answer is (polygenic inheritance;