The antonym of homoiohydry is poikilohydry, a condition in which plant water content is passively reduced or increased in equilibrium with environmental water status.
Although a retraction mechanism is not known, it has been hypothesized that the claws later retract passively, while the damaged tissue is regenerated.
Passively heated houses, solar cells, organic food, fair trade products, hybrid cars and car sharing are just some vivid examples of sustainability innovations.
