It's always great to hear news about wildlife returning to where they once lived. For the first time in 8 years the small blue --- British's smallest butterfly--- has been seen back at a nature reserve in Hertfordshire. This nature reserve has had a lot of work done recently in order to help butterflies. Management of the land has included bringing in sheep to keep the grass under control in a more natural way and planting wild flowers for butterfly species. The nature reserve is home to a number of butterfly species. In fact the way that this reserve has been managed means that it is probably the best reserve in Hertfordshire to see butterflies with at least 25 species now living in the area. There are a number of threats to British butterflies and the greatest threat is the loss of their habitat. Changing farming practice has affected British native butterfly species greatly with many more now being at risk. _ A wide species of butterflies will generally mean a healthy environment. The type of land management at the nature reserve in Hertfordshire offers a hope for many species of butterfly to live as usual. Butterflies need all the help they can get at the moment. Although the number of butterflies is beginning to increase, many are still at risk. Why did the butterflies fly away eight years ago?
The weather is changing The flowers have died out Their habitat has been lost. The environment has changed
Question: It's always great to hear news about wildlife returning to where they once lived. For the first time in 8 years the small blue --- British's smallest butterfly--- has been seen back at a nature reserve in Hertfordshire. This nature reserve has had a lot of work done recently in order to help butterflies. Management of the land has included bringing in sheep to keep the grass under control in a more natural way and planting wild flowers for butterfly species. The nature reserve is home to a number of butterfly species. In fact the way that this reserve has been managed means that it is probably the best reserve in Hertfordshire to see butterflies with at least 25 species now living in the area. There are a number of threats to British butterflies and the greatest threat is the loss of their habitat. Changing farming practice has affected British native butterfly species greatly with many more now being at risk. _ A wide species of butterflies will generally mean a healthy environment. The type of land management at the nature reserve in Hertfordshire offers a hope for many species of butterfly to live as usual. Butterflies need all the help they can get at the moment. Although the number of butterflies is beginning to increase, many are still at risk. Why did the butterflies fly away eight years ago?
A. The weather is changing
B. The flowers have died out
C. Their habitat has been lost.
D. The environment has changed
Answer: