locate relatives

The depth of an ocean is determined with the help of SONAR. Sonar uses ultrasonic waves to detect and locate objects under water. Ultrasonic waves produced from the transmitter kept in a ship are directed towards the ocean floor. The ocean floor reflects these waves. By measuring the tim..

While modern day farmers specialize in one agricultural sector, either dairy or growing potatoes, their predecessors kept a wide array of farm animals and planted many different kinds of field crops. Their farms were remarkably self sufficient, producing eggs, meat, milk, vegetables and grains for ..

Mixed Farming - While modern day farmers specialize in one agricultural sector, either dairy or growing potatoes, their predecessors kept a wide array of farm animals and planted many different kinds of field crops. Their farms were remarkably self sufficient, producing eggs, meat, milk, vegetables..

An atomic orbital is the space around the nucleus in which the probability of finding the electron is maximum. These most probable regions can be diagrammatically represented by cloud density (dot) diagrams. The density of dots (or lack of them) in any region of the cloud diagram, indicates the deg..

>Any change in the expression of a gene follows an interaction between nucleus, cytoplasm and environment. Cancer is a differentiation related disease. In cancer, the cells continue to divide due to lack of the property of contact inhibition. Cancer is caused by activation of genes called..

>km. The Milky Way is about 10 5 light years thick at the central bulge and much flatter towards the edges of the disk. The thick center represents a relatively high concentration of the stars at the center. Our solar system is located in the outskirts of the galaxy, about 25 x ..

Potential Energy of a Single Charge - In the previous chapter, we learnt about specific charge, its location, and its electric field, but here we are considering the potential energy of a charge, in an external field. Consider an external electric field 'E' produced by an external source,..

Velocity - Figure below gives different routes that Jack can choose from his house to school. Jack goes regularly to school by car, with an average speed of 60 km/hr. Is it possible to find out the time required to reach the destination? Yes, you can definitely find out the time using the rela..

Oncogenes - Growth and division of normal cells are regulated by control mechanisms. One such control mechanism is contact inhibition. As a result of multiplication, the cells become crowded and come in contact with one another. This surface contact checks movement and division of cells. Therefore,..

The rat is a typical mammal. It is a nocturnal, household pest. It is normally found living in crevices and burrows. The rat has an elongated body which can be distinguished into a head, a trunk and tail. The body has an exoskeleton formed by a covering of the hairs. It is called pelage. It provide..