Answer: By listening closely to the sound produced by rubbing of the components.
Explanation: Pericardial friction rub may have one, two, or three audible components. The rubbing of three components distinguishes a pericardial rub and it can be used to diagnose pericarditis. The pericardial friction rub can be heard even after breathe has been ceased.
Pleural friction rub has two components. Pleural friction rub can be heard only during inspiration. the Pleural friction rub causes pain on the lateral part of the chest wall. The intensity of pleural friction rub increases by pressing the diaphragm of the stethoscope over the affected area.
Explanation:
Plants in forest are not supplied with fertilizer by human beings ,yet they get mineral and salt from the dead decaying body of plants and animal found in the forest .Animal die in forest get converted into humus by bacteria and other animals .Sources of energy is transferred from one life to other by different means in this way plants in forest get plant and mineral.
tree and nest
If a robin builds a nest in a big tree, the robin benefits and the tree
is not helped or harmed. This type of symbiotic relationship is called
commensalism, and it is between the tree and the nest/Robin.
<span>There are several types of biotic relationships that is occurring every single moment in the ecosystem and commensalism is one. In contrast, parasitism is the biotic relationship where one organism doesn't benefit from the other and is harmed. In this scenario with human beings and mosquitos, this phenomenon of interaction is distinguished as parasitism where mosquitos draws blood that contains nutrients from the human tissue to use it as its source of food and then leaves harmful substances and bacteria in the human’s blood stream.<span> </span></span>