Answer:
Explanation:
Parasitism, in biology, is defined as a relationship between different species, formed by a parasite and a host. So, basically the parasite lives in or on the host, causing it harm. Parasites can be describe as predators that eat less than one prey unit, that is, they feed them selves slowly, they don't kill the prey instantly as actual predators do.
So, in this case, we are talking about leeches, which are defined as parasitic worms which lives in freshwater environments. They feed themselves by sucking blood from the host.
Therefore, the relation between these two species is Parasitism.
Answer:
During high fever a wet cloth is kept on the forehead of a person to decrease the temperature of body. ... When the wet cloth is placed on the forehead, water in wet cloth starts to evaporate and it starts to absorb a lot of heat from our body. Hence it is used to decrease the temperature of body.
Answer: The mass of the atom is basically the average atomic mass of all the stable isotopes.
Explanation:
Average atomic mass is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
For Example: Taking the element silicon
Three isotopes of Silicon, which are Si-28, Si-29 and Si-30.
Average atomic mass of silicon = 28.086 amu
As, the average atomic mass of silicon is closer to the mass of Si-28 isotope. This means that the relative abundance of this isotope is the highest as compared to the other two isotopes.
Percentage abundance of Si-28 isotope = 92.2%
Percentage abundance of Si-29 isotope = 4.7 %
Percentage abundance of Si-30 isotope = 3.1%
Hence, the mass of the atom is basically the average atomic mass of all the stable isotopes.
Conduction
Electromagnetism
Convection
Answer:
CONDUCTION
Explanation:
When a driver touches a cars steering wheel on a hot day heat is transferred to the drivers hand by conduction
The heat is transferred to the driver's hand by conduction because his hand touched the steering wheel (i.e physical contact involved), the heat is transferred through the driver's hand as against radiation that doesn't require any physical contact.
I hope this helps.
Answer:
In contrast, wind turbines produce no greenhouse gases when generating electricity. We should note that both noise and visual pollution are environmental disadvantages of wind turbines. However, these factors don't have a negative impact on the earth, water table or the quality of the air we breathe.