The Arctic fox eats meat or scraps which is most likely to have come from caribou that had been killed by a polar bear or wolf. The caribou would have eaten moss such as a reindeer. Moss, like all plants needs water which is absorbed from the ground, moss is a fungi that can form on anything.
Ice cream
Simplistically, from their food. However, the base of the food chains, the producers of the tundra, are the plants such as arctic mosses, which photosynthesise like plants everywhere.
Food chains can be longer in trophic regions than in tundra regions due to the greater biodiversity and availability of resources in warmer climates. Trophic regions, such as temperate and tropical ecosystems, support a wider variety of producers and consumers, allowing for more complex interactions and longer chains. In contrast, tundra regions have limited vegetation and fewer species, resulting in shorter food chains with fewer trophic levels. The harsh environmental conditions in tundra also restrict the energy available to support larger food webs.
because species richness or biological diversity is very high in the tropical regions than the tundra regions
Bug, Bird, Cat.
they make their own food from sunlight
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Every animal is part of some food chain.
It depends.In some food chains, a spider is a predator because it traps its food in webs. It will eat organisms such as flies.In other food chains, Spiders are prey. They will be eaten by organisms such as birds.
Food webs are different chains mixed.
there can be different foods in a tundra
They are called food chains.