Answer:
Quadrat method is used for estimating the number of individuals in an area. In this method, a large square area on the ground or water surface is marked, call it an enclave. The number of animals present in this enclave is counted. Then by assuming that the animals are less migratory and are uniformly distributed, their number for a large area is estimated by the use of unitary method of calculation. Example a 4 square feet area has 2 snails, then a 1000 square feet area will have (1000 x 2)/4, i.e, 500 snails in it. Fishes can be counted using this method only if they are confined in a small water body like a lake or a pond. Rivers are flowing so the fishes may move along its length which can give us an underestimate or an overestimate of their numbers. Sea has its depth and huge area, and fishes can be moving randomly in it. Hence this method will not work for river and sea fishes.
Explanation:
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<h2>Answer:</h2>
True
<h2>Explanation:</h2>
When an animal is killed illegally it is called poaching. Poaching is usually done when an animal possesses something that is considered valuable such as the fur of the tiger and teeth of elephants. Poaching has been considered as a crime by law because it can affect the environment by depleting certain species of animals. It causes animals that are endangered to become extinct, which creates a disturbance in the food chain.
The processes is an example of hydrolysis is conversion of cellulose into glucose units. The answer is letter C. Conversion of glucose units into starch and conversion of fructose and glucose units to form <span>sucrose are not processes of hydrolysis.</span>
Answer:
Salt leaves the road and enters the environment by splash and spray from vehicles, transportation by wind, snow melt into the soil and as runoff to surface waters. Salt primarily causes dehydration which leads to foliage damage but also causes osmotic stress that harms root growth.
