Both are inland water ecosystems. The difference is in the time it takes for the water to be renewed. Lotic refers to fast renewal of the water supply as in rivers and streams. Basically the water is in constant movement. Lentic refers to ecosystems where water is trapped in some ground depression like lakes, ponds, marshs, etc. The renewal of water depends mainly on rains.
Lentic aquatic systems are those which contain stagnant waters. These are usually formed in small or large depressions on earth's surface which possess no exit for the water to flow out. Lentic systems, therefore, are closed systems. Whatever gets in it, rarely gets out. It has to decay, decompose or persist as such within the lentic body. Natural processes in the long run change such a body into a swamp or a marsh, a wetland and finally to dry land. Small puddles, ponds and lakes are familiar examples of such systems.
The Lotic Aquatic Systems:
Lotic aquatic systems are those systems which contain flowing waters. The mass of water in these systems is in a state of perpetual motion. Streams and rivers are familiar examples of such systems. The basic function of these lotic bodies of water is to carry the surplus rain water back to the sea. The total amount of water which streams and rivers of the world carry to the oceans amounts to almost 25 cms of rains distributed evenly over the land surface.
The senses of smell and taste combine at the back of the throat. When you taste something before you smell it, the smell lingers internally up to the nose causing you to smell it.
The energy flow through living organisms starts with sunlight and photosynthesis, then travels through the food chain in bite sized chunks. Primary producers, primary consumers, secondary consumers, and decomposers are all part of the food chain. It's great to be an Omnivore.
