Question

1. how do living things use matter and energy? they create new elements to sustain life they only use energy during reproduction they break down monomers into polymers they recycle essential elements like oxygen and carbon through ecosystems

Explanation:

Living things cannot create new elements as that requires nuclear - level processes. Energy is used in many life - processes, not just reproduction. Monomers are built into polymers, not broken down into them in the context of using matter and energy. Living things recycle essential elements like oxygen and carbon through ecosystems via processes such as respiration and photosynthesis.

Answer:

They recycle essential elements like oxygen and carbon through ecosystems