Molten material is allowed to solidify into the final shape.
Casting defects occur during solidification:
Gas porosity
Shrinkage
Two stages of solidification:
Nucleation
Growth
The correct answer is (a) driving.
The pressence of undesirable substances in air is called as air pollution. There are many human activities that contribute to air pollution. The biggest contributor is driving. The pollutants that comes out of the car are carbon dioxide, carbon monoxide. They also release hydrocarbon and nitrogen oxides which when combines in sunlight becomes ozone. Air pollutants emitted by cars and other automobiles increases the level of harmful gases which to severe health problems such as heart disease, asthma, irritation in eyes.
Answer
The (L) and (M) gene loci are linked.
Explanation:
Due to some technical problems, you will find the complete explanation in the attached file named <em>Linked genes. </em>
Answer:
Platinum, Gold, Silver, and Palladium: This are bullion metals, used to make coins and jewelry. These elements are also used in medicine, particularly silver, which is antibacterial. Because they are excellent conductors, these metals may be used to make contacts and electrodes.
Explanation:
Answer:
It is not necessary that both partners get equal benefits from each other.
Explanation:
Mutualism is a symbiotic relationship between two individuals. In mutualism both the partners get benefitted from each other but it is not necessary that both get equal benefits from each other.
Every mutualistic relationship is different and in all mutualistic relationships, altruistic behavior is not seen by any partner species. Each partner is selfish and help the other partner unintentionally in mutualism. So it is not necessary that each partner gain equal benefit in this relationship.
