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.
Best Answer: Hens lay eggs every 25 hours. They lay by the day light, so because they dont lay an egg everyday at the same time when it comes to afternoon they will hold that egg off until the next morning.Yes you can have only hens and get edible eggs, the only thing a rooster is needed for is to make baby chickens.ou only need a rooster if you want fertile eggs. Once the hens are about 6 months and up each should lay eggs at least once a day. They can lay 1 to 3 eggs per hen per day.All the best;~}.