Food and food resources are essential for life. Plants and animals are the two main natural sources of food. Plants serve as food resources for herbivores and omnivores, with India's main agricultural products being cereals, pulses, spices, beverages, vegetables, and fruits. Animals and birds are a major food source for carnivores and omnivores, providing meat, eggs, milk, honey, and oils. However, growing problems with world food supplies exist due to increasing population, wealth, and environmental degradation combined with insufficient growth in irrigation and fertilizer.