In this articleÂ­, we will examine solar cells to learn how they convert the sun's energy directly into electricity. In the process, you will learn why we're getting closer to using the sun's energy on a daily basis, and why we still have more research to Â­do before the process becomes cost-effective.n this articleÂ­, we will examine solar cells to learn how they convert the sun's energy directly into electricity. In the process, you will learn why we're getting closer to using the sun's energy on a daily basis, and why we still have more research to Â­do before the process becomes cost-effective.
How long does a hen stay fertile after the rooster is gone?   A hen stays fertile for about 2-2 and a half weeks after the rooster is gone. The sperm stays in her for about that long, sometimes even up to 3 weeks. Started career as professional chef then a district sales manager for a wine & spirits company.
Roosters are only needed in order for the egg to be FERTILIZED (to have a baby). Hens lay eggs with or without a rooster around. How long does it take a mother hen to hatch her eggs? It takes 20 day for a mother hen to hatch her eggs, and 21 days if your using an incubator.Do hens take care of their eggs? yes all mothers take care of their eggs and youngones...All the hens lays eggs in a safe and same place regularly.oosters are only needed in order for the egg to be FERTILIZED (to have a baby). Hens lay eggs with or without a rooster around. How long does it take a mother hen to hatch her eggs? It takes 20 day for a mother hen to hatch her eggs, and 21 days if your using an incubator.