Short Note on Exchange of Gases in Aquatic Animals
Note on Exchange of Gases in Aquatic Animals
The skin of aquatic animals is moist and rich with blood so that oxygen can diffuse directly. Frog and tortoises breathe through skin during hibernation.
Gills are very effective for gaseous exchange in aquatic animals. Some animals have external gills. Water enters through mouth flows over the gills and goes out of the body.
Note: The main advantage is that parents can discuss an individual schedule for attending lessons, their duration and develop a training program that takes into account the characteristics of the child . In this case, the teacher must be a highly qualified specialist, a psychologist and a true friend. Then he will be able to interest his student, give him an incentive to self-improvement, increase self-esteem. Nevertheless, Russian universities, in accordance with Western standards, now graduate masters and bachelors. Despite all the changes, the quality of education has significantly decreased, the cost has gone up, the graduation from the university has ceased to be a guarantee of successful employment, and the Russian diploma abroad, in most cases, has to be confirmed. Graduates are often faced with the question of the need to enter the university. For the answer to which, all the advantages and disadvantages of this type of training should be weighed.