(1) Al1 cellular processes occur in water medium. (2) Water is general solvent for chemicals found in living World. They react only in dissolved state. Transport also occurs in dissolved state.
(1) Al1 cellular processes occur in water medium.
(2) Water is general solvent for chemicals found in living World. They react only in dissolved state. Transport also occurs in dissolved state.
Inorganic fertilizers containing phosphates and nitrates released into water bodies give out a lot of nutrition to phytoplankton. It causes eutrophication. Algal growth occurs tremendously. Decomposition of these algae makes the aerobic decomposers highly active which in turn causes depletion of disRead more
Inorganic fertilizers containing phosphates and nitrates released into water bodies give out a lot of nutrition to phytoplankton. It causes eutrophication. Algal growth occurs tremendously. Decomposition of these algae makes the aerobic decomposers highly active which in turn causes depletion of dissolved oxygen in water bodies. Lack of dissolved oxygen in water leads to death of aquatic animals, especially fishes, due to suffocation.
Lead compounds are added to petrol to reduce knocking, i.e., rapid combustion. Burning of this petrol leads to formation of lead halides (bromides and chlorides) which are emitted into air with exhaust. Lead inhalation causes anaemia and brain damage, lead poisoning which disturbs the nervous systemRead more
Lead compounds are added to petrol to reduce knocking, i.e., rapid combustion. Burning of this petrol leads to formation of lead halides (bromides and chlorides) which are emitted into air with exhaust. Lead inhalation causes anaemia and brain damage, lead poisoning which disturbs the nervous system, liver and kidney.
List two ways in which water is useful to living organisms
(1) Al1 cellular processes occur in water medium. (2) Water is general solvent for chemicals found in living World. They react only in dissolved state. Transport also occurs in dissolved state.
(1) Al1 cellular processes occur in water medium.
See less(2) Water is general solvent for chemicals found in living World. They react only in dissolved state. Transport also occurs in dissolved state.
Mention one method by which living organisms influence the formation of soil.
Lichens secrete chemicals to dissolve minerals from rock surface, produce crevices where dust collects and mosses grow to form small amount of soil.
Lichens secrete chemicals to dissolve minerals from rock surface, produce crevices where dust collects and mosses grow to form small amount of soil.
See lessName the man made component which is responsible for the depletion of ozone layer.
Chlorofluorocarbon or CFC.
Chlorofluorocarbon or CFC.
See lessName the fertilizers whose excessive presence in water bodies results in algal growth. What is the consequence of eutrophication.
Inorganic fertilizers containing phosphates and nitrates released into water bodies give out a lot of nutrition to phytoplankton. It causes eutrophication. Algal growth occurs tremendously. Decomposition of these algae makes the aerobic decomposers highly active which in turn causes depletion of disRead more
Inorganic fertilizers containing phosphates and nitrates released into water bodies give out a lot of nutrition to phytoplankton. It causes eutrophication. Algal growth occurs tremendously. Decomposition of these algae makes the aerobic decomposers highly active which in turn causes depletion of dissolved oxygen in water bodies. Lack of dissolved oxygen in water leads to death of aquatic animals, especially fishes, due to suffocation.
See lessWhy are lead compounds are added to petrol? How is it harmful?
Lead compounds are added to petrol to reduce knocking, i.e., rapid combustion. Burning of this petrol leads to formation of lead halides (bromides and chlorides) which are emitted into air with exhaust. Lead inhalation causes anaemia and brain damage, lead poisoning which disturbs the nervous systemRead more
Lead compounds are added to petrol to reduce knocking, i.e., rapid combustion. Burning of this petrol leads to formation of lead halides (bromides and chlorides) which are emitted into air with exhaust. Lead inhalation causes anaemia and brain damage, lead poisoning which disturbs the nervous system, liver and kidney.
See less