How do fiberglass and plastic contribute to greenhouse construction?

Fiberglass and plastic play a significant role in greenhouse construction primarily by providing insulation against heat loss. Insulation is essential in a greenhouse setting to maintain an ideal environment for plant growth. By using materials like fiberglass and certain types of plastic, the greenhouse can retain heat during colder weather, contributing to a consistent internal temperature that supports optimal plant growth.

While insulation is one crucial aspect, these materials also tend to have good light transmission properties, which is important for plant photosynthesis. However, their primary advantage in the context of heat retention directly influences energy efficiency and operational costs in maintaining a stable climate within the greenhouse.

The other options, while they may represent some benefits of using various materials in greenhouse construction, do not encapsulate the primary function of fiberglass and plastic as effectively as the insulation against heat loss. The emphasis on thermal regulation is what makes these materials particularly valuable in greenhouse settings.