Question

the second law of thermodynamics states that the entropy, or disorder, in a system constantly increases. how do biological systems remain highly ordered? biological systems only contain chemical energy, so they remain highly ordered. biological systems follow the third, rather than the second, law of thermodynamics. biological systems require an input of energy to remain highly ordered. biological systems are not impacted by entropy, so they remain highly ordered.

Explanation:

Biological systems are open - systems that take in energy (such as through photosynthesis or consumption of food). This energy input helps them maintain order despite the second law of thermodynamics which applies to all systems. The energy is used to perform work and maintain cellular and organismal functions, counteracting the natural tendency towards increased entropy.

Answer:

Biological systems require an input of energy to remain highly ordered.