Arctic cottongrass is eaten by migrating snow geese, caribou calves and humans. The Inuit preserved its stems in seal oil, used it in stone lamps and ate it raw, saving the downy heads to use as stuffing for pillows. Cot... More » Science Biology Botany

Most herbivores, such as cows buffaloes, goats, sheep and deer, eat grass. Animals that live in the forest eat grass, twigs, plants and leaves. Horses eat hay, which is dry grass. Even insects such as grasshoppers eat gr... More »

Each species of animal has slightly different behaviors when it comes to eating. Horses, for example, eat by biting off blades of grass with the front teeth and then chewing the grass with the molars. Dogs grab bites of ... More » Pets & Animals Mammals

Photosynthesis is the ultimate source of the energy for all the food that humans require, as well as the source of the energy used to build the biological materials that humans use, such as wood, cotton and wool. It is a... More »

Common plants during the Cenozoic Era included moss, grass and flowering plants, as well as edible crops late in the period when humans began to learn how to grow their own food. Plant life began to flourish during the C... More »

Several parts of rose plants are considered edible by many insects, birds and mammals, including humans. Although most roses are protected by thorns, the petals, seeds and fruit, known as rose hips, are a natural part of... More »

There are 15 invasive species that threaten tundra biomes, according to the Global Invasive Species Database, including Canada geese, dogs, cats, beavers, weasels, sheep, red foxes, European starlings and pine trees. Inv... More »