Spruce and Cedar are tree varieties of temperate coniferous forest.

Explanation:

Spruce and cedar are tree varieties that belong to the temperate coniferous forest.

Temperate Coniferous Forest:
The temperate coniferous forest, also known as the taiga or boreal forest, is a biome characterized by cold temperatures, moderate precipitation, and the dominance of coniferous trees. This biome is typically found in the northern hemisphere, primarily in North America, Europe, and Asia.

Spruce:
Spruce trees are a common species found in the temperate coniferous forest. They are tall evergreen trees that have needle-like leaves and bear cones. Spruce trees are adapted to the cold climate of this biome and are able to withstand harsh winter conditions. They are known for their straight trunks and dense foliage, which provide shelter and nesting sites for various bird species.

Cedar:
Cedar trees, specifically the western red cedar, are also found in the temperate coniferous forest. These trees are evergreen and have scale-like leaves. Cedar trees are known for their durability and resistance to decay, which makes them highly valued for their timber. They are commonly used for construction, furniture, and other woodworking purposes.

Characteristics of the Temperate Coniferous Forest:
- Cold temperatures: The temperate coniferous forest experiences long winters with freezing temperatures and short summers.
- Moderate precipitation: This biome receives moderate rainfall throughout the year, with snowfall in winter.
- Coniferous trees: The dominant tree species in this biome are conifers, such as spruce, cedar, fir, and pine.
- Needle-like leaves: Coniferous trees have needle-like leaves that help them conserve water and withstand cold temperatures.
- Wildlife: The temperate coniferous forest is home to a variety of wildlife, including deer, moose, bears, wolves, and various bird species.

In conclusion, spruce and cedar are tree varieties that belong to the temperate coniferous forest biome. They are well-adapted to the cold climate and play a crucial role in the ecosystem by providing habitat and resources for various organisms.