Mostly through bites, I think.
The answer should be <span>Ruby-throated hummingbirds hibernate during the winter.</span>
a substrate is the surface on which an organism (such as a plant, fungus, or animal) lives. A substrate can include biotic or abiotic materials and animals. For example, encrusting algae that lives on a rock (its substrate) can be itself a substrate for an animal that lives on top of the algae.
Hope this helped :)
I think the best answer from the choices listed above is the first option. The biome that dominates the region of the United States is a grassland. But the correct answer would be a temperate deciduous forest. This biome occupies almost half of the east region of the US.