If echinoderms use scent to communicate, then what do echinoderms use to communicate? Answer choices: - vision - words - sound - Light - waves - Acids - language - scent
scent

If most people can survive only a few days without h2o, then what can most people only survive a few days without? Answer choices: - NaCl - television - H20 - food - rain - urea - running - h2o
h2o

If oxygen and heat are transported to other parts of the body, then what is transported to other parts of the body? Answer choices: - Organic compounds - ice - oxygen and heat - vital organs - heat energy - Veins and arteries. - electromagnetic energy - cat hair
oxygen and heat