The correct options are
A It is the source of gene bank for breeding programmes
C It balances population
D It maintains food chains and natural cycles
Wildlife is important because they are not only important for the ecosystem/ biome but number of direct and indirect benefits and services are provided to mankind as well. Many plants and animals have major roles in maintaining food chains and food webs. Many animals are pollinators and contribute majorly to production of fruits, seeds and even crop produce. Biodiversity is very important to maintain the gene pool of all the native/wild varieties of crops and animals.