Answer in brief: (a) Why should we conserve biodiversity?

(a) Biodiversity is the variety of all life forms on Earth and it includes different plants, animals and micro-organisms and the ecosystems of which they are a part. We should conserve the biodiversity because it is very important for all living organisms and also for the environment. We should conserve it from being extinct. (b) Protected forests are not completely safe for animals as poachers have access to these areas and kill animals. There is a need to make strict rules against poaching and trespassing. (c) Some tribals still depend on the jungle for their food, fuel, wood, shelter, etc. They live in forests. Forests are the source of livelihood for them. (d) The main cause of deforestation is urbanization and industrialization. The consequences will result in soil erosion, global warming, and depletion of groundwater, which cause ultimate danger to human beings. (e) The Red Data Book is the source book which keeps a record of all endangered species. (f) Migration is the movement of species from their own habitat to other habitats for a particular time period for a specific purpose like breeding.