An important prelude to a greeting or opening line is often small talk eye contact physical intimacy a pheromone

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?