How do you identify uranium? Uranium is a silvery-gray metallic weakly radioactive chemical element. It has the chemical symbol U and atomic number 92. The most common isotopes in natural uranium are 238U (99.27%) and 235U (0.72%). What is the most common use for uranium? A radioactive, silvery metal. Uranium is a very important element […]
Why are the mirror fitted on the outside of cars convex?
How many whooping cranes are left today?
How many whooping cranes are left today? We appreciate your contribution to the recovery of the Whooping Crane Eastern Migratory Population. This report is produced by the International Crane Foundation. The current estimated population size is 80 (39 F, 38 M, 3 U). Seventeen of these 80 individuals are wild-hatched and the rest are captive-reared. […]
Are Finns Nordic or Slavic?
Are Finns Nordic or Slavic? Finns are North Europeans, closely related to Estonians and Swedes-Norwegians, but also to North Russian and Baltic people. Via N male ancestry, which is Finnic. They are neither Slavic nor Scandinavian but because of Finland’s close history to Sweden, they are most likely closer to Scandinavian. What would happen if […]
Why does an apple look green?
Why does an apple look green? Green apples appear green because of chlorophyll in the peel. In red apples, the colour of chlorophyll is masked by the presence of anthocyanins, which are red in colour. Interestingly, anthocyanins accumulate in vacuoles, while the chlorophylls are present in chloroplasts of apple peel cells. Why is the color […]
Can you drive in freezing rain?
Can you drive in freezing rain? Don’t drive, if you don’t have to. If you are aware of freezing rain conditions, stay home. Even with the reduction of speed, slick conditions like freezing rain just means that you will slide slower across the ice-ridden roads. Is driving with sleet dangerous? One of the reasons it […]
What increases effective population size?
What increases effective population size? One of the things that can influence the effective population size is the sex ratio of the breeding animals. We can estimate Ne using information from a population census or pedigree database about the numbers of males (Nm) and females (Nf) that produce offspring in a generation. How does population […]
What best compares radiation and conduction?
What best compares radiation and conduction? The statements that best compares radiation and conduction are the following: both transfer thermal energy from warm objects to cooler objects and both can transfer energy through matter. The difference is that conduction is through direct heat transfer; whereas, radiation transfers heat through waves. What describes how radiation moves? […]
How many circles do you need to balance the scale?
How can groundwater erosion be prevented?
How can groundwater erosion be prevented? mulch. Using straw, wood chips, saw dust, or some other material as ground cover can limit the effects of erosion until plants or crops can grow to the point of protecting the soil themselves. Are caves formed by erosion? Corrasional or erosional caves are those that form entirely by […]