Question

fill in the blank question
scientists use existing materials to make new \boxed{} materials.
need help? review these concept resources.
read about the concept

Explanation:

In the context of science, especially in fields like chemistry or materials science, scientists often take existing materials and transform them to create new "synthetic" materials (or other appropriate terms like "useful", but "synthetic" is common here as it relates to creating new materials from existing ones through processes like synthesis). The key idea is that they manipulate existing substances to produce new materials with desired properties.

Answer:

synthetic (or other appropriate terms like 'useful', 'functional' can also fit, but'synthetic' is a common and precise term in scientific material creation context)