When MAC is stiff, the skeletal system becomes an exoskeleton-like hard shell: echinoderms enjoy the merit of protection-oriented animals.
(MAC; is; stiff) (echinoderms; enjoy; the merit of protection-oriented animals) Context(echinoderms enjoy,List([79, 96))):(the skeletal system; becomes; an exoskeleton-like hard shell; T:When MAC is stiff)
echinoderms enjoy,List([79, 96))
MAC echinoderms the skeletal system
is enjoy becomes
stiff
the merit of protection-oriented animals
an exoskeleton-like hard shell T:When MAC is stiff