Don't you remember Nemo, famous animation character from Pixar Studios. But there is something mysterious about this cute looking fish that the movie didn't tell you. Do you know that clownfish can change it's gender? True, clownfish are all born males and when the only female member of group dies the dominant male changes his sex and become female. A school of clownfish has a strict social hierarchy. The leader of school is a dominant female clown fish who is much larger than the other members. Second position in the hierarchy goes to the largest and aggressive among the males. All other males are at the bottom of the hierarchial ladder. Only the dominant male mates with the female clownfish. If dominant female faces natural or unnatural death, then the dominant male will eats more and grows in size and gradually transforms into a female (clownfish are born with both ovarian and testicular tissues and hormones determine the sex). Then one of the remaining males will be chosen as her breeding partner and this cycle continues. So the movie was completely wrong from the perspective of science, isn't it?
Engine oils play a crucial part in your engine’s functionality. Without the oil, your engine can become damaged fairly quickly and so it’s in your best interest to make sure that the engine oil is up to par. The oil in your engine makes sure that the all mechanical components are lubricated to reduce friction, wear and heat. The engine oil ensures that components don’t rub against each other and wear away. While it depends on how often you use your car, older engine oil doesn’t perform as well and so a regular change in engine oil is essential to the functionality of your car.