List-I(Protocol/Convention)
List-II(Year)
List-I(Forest Act/Policy)
Read the following passage and answer the next five questions:
Species interaction and productivity are two important components of any given ecosystem. In an ecosystem, interspecific interactions arise from the interaction of populations of two different species. Such interactions could be beneficial to both species, harmfulto both species, beneficial to one and harmful to the other, or vice-versa. There are also cases where only one species is harmed or benefitted, while the other remains unaffected. On the other hand, the productivity of an ecosystem starts with photosynthesis by green plants and is measured as the amount of biomass produced over a period of time. Such biomass becomes available for consumption to heterotrophs.
Agricultural runoff, sewage, and industrial effluents are major causes of the deterioration of water quality in lakes and ponds. Productivity of lakes and ponds (for example, algal bloom and phytoplankton bloom) increases manifold due to agricultural runoff as well as due to excess inputs of nutrients including limiting nutrients, but this continuous increased productivity leads to the death of lakes and ponds. The dissolved oxygen BOD, temperature, turbidity, and salinity are important parameters of water quality in a lake and change naturally on a day and night basis as well as a seasonal basis. However, anthropogenic inputs change these parameters abruptly and adversely impact the water quality of the lakes. As a result, water in lakes and ponds does not remain fit for human consumption as well as for livestock. Immediate attention and affirmative actions are needed to protect lakes and ponds in our environment.