Rot Race lab Report essays

Rot Race lab Report essays Purpose: To see how fast organisms and materials decay under certain conditions. Procedure: We gathered 4 2-liter plastic pop bottles and cut them to assemble the drawing below. Near the bottom we placed a siv to let juices drain through into the bottom 2-liter. Then we stacked materials and organisms on top of each other until it was about 20 cm tall. We then randomly poked holes into the sides of the pop bottles to let air escape. This is the order we placed the materials, from top to bottom; 2 cups of dirt, 13 pieces of melon, I cup of soil, 3 chunks of wax, 2 cut up bananas, 4 slices of apple, 1 banana peel, many slices of carrot peelings, 1 cinnamon roll, apple sauce, 1 slice of bread, and then the siv. Next we let it sit and made observations every Tuesday and Friday. We checked the color change, smell, height (cm), temperature (degrees Celsius), mass (lbs), Ph, and we checked for living organisms. Conclusion: After the experiment we decided that the bread decomposed the best. I believe this because the bread was the most porous, which allowed more bacteria could get to it. We also decided that the wax decomposed the worst because it was the hardest and most compact. We knew that decomposition was taking place because mold was growing on some of the material and the height and mass were decreasing. When an organism decays it loses it size and mass just like our rot column. Improve: One of the ways that we could have improved our experiment is by placing the material on top of the other material and let it set, instead of mashing it and mixing it together. Also we could have put in materials that were harder to decompose. Another thing we could have done was to put more holes in the bottle. That would have let more air escape therefore it wouldn't have smelled as bad. Or maybe we should hav ...

How to Stay Safe in College

How to Stay Safe in College Staying safe while youre in college doesnt have to be complicated. These fifteen tips can be done with minimal effort and can avoid lots of problems later. Top 15 College Safety Tips Make sure the main door to your hall or apartment building is locked at all times. You wouldnt just leave the front door to your house open, would you? Dont let anyone into your hall or apartment building that you dont know. Not letting someone in doesnt make you look like a jerk. It makes you look like a good neighbor and, if the person is supposed to be in your hall, theyll be grateful for it. Make sure your room door is locked at all times. Yes, this even means when you run down the hall to borrow a book or hop in the shower. Be careful with your keys. Also, if you lose them, dont depend on your roommate to keep letting you in, thinking that your keys will just pop up. Pay the fine and get a new set. If you have a car, lock it. It seems so easy to remember, yet its so easy to forget. If you have a car, check on it. Just because you havent been using your car very much this semester doesnt mean someone else hasnt! Get a locking device for your laptop. This may be a physical lock o r some kind of electronic tracking or locking device. Watch your stuff in the library. You may need to take a quick run to the vending machines to clear your mind...just as someone happens to walk by and see your iPod and laptop unattended. Keep your windows locked. Dont be so focused on locking your door that you forget to check the windows, too. Put emergency numbers in your cell phone. If your wallet is stolen, will you know what phone number to call to cancel your credit cards? Put important phone numbers in your cell so that you can call the moment you notice something is missing. The last thing you want is someone cashing in on the money youve been budgeting for the rest of the semester. Use the campus escort service at night. You may feel embarrassed, but its such a smart idea. And besides, who wouldnt want a free ride?! Taking a friend with you when going out at night. Male or female, big or small, safe neighborhood or not, this is always a good idea. Make sure someone knows where you are at all times. Heading to a club downtow n? Going out on a date? Theres no need to spill all the intimate details, but do let someone (a friend, a roommate, etc.) know where youre going and what time you expect to get back. If you live off-campus, send someone a message when you get home.  If youre studying for finals with a friend late one night at the library, make a quick agreement that youll text each other you get home later that evening. Know the phone number for Campus Security.  You never know: you may need it for yourself or for something you see from far away. Knowing the number off the top of your head (or at least having it in your cell phone) may be the most important thing to remember during an emergency.