Nowadays there is an increasing number of people who go in for mountain climbing. Indeed, it is an awesome outdoor sport, which can offer us a chance to get close to nature. While climbing a mountain, we can enjoy beautiful views along the way and totally relax ourselves after tiring work or study. Besides, it can not only benefit our health but also shape our character.

However, mountain climbing is also likely to cause some negative effects. Take environmental protection for example, some people always throw away empty bottles or garbage bags along the path while climbing a mountain, which has become a real headache for the cleaners. What’s worse, many forest fires are caused by cigarette ends which are left behind carelessly by some smokers.

To sum up, mountain climbing is a sport worth joining in. But when climbing a mountain, we must pay attention to the two problems mentioned above. Only by our joint efforts can we make mountain climbing enjoyable and worthwhile!