why do plankton rise as the sunsets

why do plankton rise as the sunsets

Remember that there are two types of plankton. On any day there will be the movement of phytoplankton followed closely behind by the zooplankton. Diatoms have diurnal rhythms in the water column. As soon as the sun is up they commence photosynthesis. The process generates oxygen and so the diatom becomes buoyant and begins to rise in the water. This causes it to move closer to the surface and gain more light for maximum photosynthesis. Of course, when the sun sets food production halts, no oxygen is formed and is used up. Buoyancy is lost and it starts to sink. If it sinks below the lit zone before photosynthesis starts the next day it will continue to sink and dies on the bottom. The herbivorous animals in the plankton will follow the food, so if the diatoms move close to the surface

 why say bless you after someone sneezes

why say bless you after someone sneezes

The confusion and mild hurt you feel when no one says вbless youв when you sneeze makes you realise that this response has become second nature. Itвs just polite, isnвt it? Or is it? Come to think of it, does anyone actually know why we bless a personвs sneeze? Did you know? Disney once planned a prequel to Snow White And The Seven Dwarfs In all honesty: No. Nobody has been able to determine exactly why we bless a sneeze, or where the blessing first originated from. But, there are lots of theories. One common belief is thatВ вGod bless youв was a phrase uttered by Pope Gregory the Great during a bubonic plague epidemic that took place in the sixth century. As sneezing was one of the symptoms of the plague, it was a way to wish good health on someone. Another theory is that it в stick

 why wont he say i love you

why wont he say i love you

I broke up with my ex boyfriend 3 weeks ago. He told me it was going to be hard when I leave to college and he was done with all the fighting about little things it got too intense we need to just breathe. He has anxiety and trust issues because his dad wasn t there all of his life and I ve tried to help him through it. We ve been together for 1 year and 6 months and we ve talked about our future and the apartment we were going to get and he wanted to get me a promise ring. He told me that he would never find another girl who can put up with him like I do, who understands him and makes him happy. He s told me that he needs me and we even planned to get married 5 years from now. 2 days after we broke up he texted me saying he wanted me back and that he made a mistake. I told him he needed

 why do your teeth chatter when you are cold

why do your teeth chatter when you are cold

SUMMARY: Do you know why your teeth chatter when you're cold? Posted: February 3, 2015 When you walk out into a frigid winter s day, odds are at some point or another your teeth will start to chatter. That fast-paced opening and closing of your teeth is no accident. It s actually a mechanism the body uses to keep its core temperature of 98 degrees Fahrenheit. This is similar to the reason humans shiver. Any time skin gets too cold, receptors tell the muscles to expand and contract in quick bursts in order to produce heat. So, if you find your teeth chattering and you re shivering simultaneously, it s might be a sign that you need to warm up in the near future. How teeth chattering works Medical Daily notes that teeth chattering is a method of homeostasis. ...

 why do we get drunk when we drink alcohol

why do we get drunk when we drink alcohol

What happens when we get drunk? When we drink alcohol, the drug enters the bloodstream very quickly and travels to every part of your body. The effects can usually be felt within a few minutes. The effect alcohol has on you mainly depends on how much you drink. But people who are used to drinking a lot may not feel the effects as quickly as people who drink less. Other things can affect your own reaction to alcohol, like drinking on an empty stomach or your body type. Read more:В AsВthe amount of alcohol in your blood increases, the effects on your body and behaviour follow a similar pattern, althoughВthe number of drinks needed to reach a certain stage of drunkenness varies from person to person. Your alertness, coordination and reaction times may already be impaired, which is why it is

 why does an octopus have three hearts

why does an octopus have three hearts

An Octopus has 3 Hearts, 9 Brains Blue Blood August 22, 2012 in This NOAA Fisheries video features spectacular underwaterб footage of octopus swimming and eggs hatching. б NOAA researcher Liz Conners of the Alaska Fisheries Science Center points outб the challenges of managing the Pacific octopus in Alaska and how researchers are working to develop new technology to better capture, tag, and study the octopus. The research study is a collaborative effort among the North Pacific Research Board, NOAA s Alaska Fisheries Science Center, the University of Alaska Fairbanks, and the Alaska fishing community. б 1. A 50-pound octopus can squeeze through a hole only 2 inches in diameter. If their beak fits, they can get through. 2. Theyб are about 90 percent muscle. 3. You can tell a male octopus

 why is tim hortons coffee so addictive

why is tim hortons coffee so addictive

I've heard it's because they put nicotine in the coffee (At least that's what some of the Canadians on a hockey forum I post on claim). We've got a few of them here in Atlanta since they're now owned by Atlanta-based Raving Brands (Other chains they own and franchise are Moe's Southwest Grill, Mama Fu's Asian House, Planet Smoothie, Bonehead's Seafood, Shane's Rib Shack, Doc Greens Gourmet Salads, and Monkey Joes). Honestly, I've found that the major coffee companies out of New Orleans (Standard and Community) don't have a good cup of coffee at all (I'm not just saying this because they're competitors to my employer here in Atlanta, I've had customers in some of my accounts tell me as such and also from my own experiences). ...

 why do people talk to themselves psychology

why do people talk to themselves psychology

People just to talk. We communicate with each other all day long through text messages, emails, phone calls, and face-to-face interactions. Language is a powerful communication tool that enables us to connect, to share ideas and to deepen. We are social creatures and by talking to one another, we feel more connected. Interestingly, the types of conversations we choose are astonishingly consistent. There is a recurring theme in most of what we say. Studies show that hands down, our favorite topic of communication is, you guessed it, ourselves. AsP Why, in a world full of ideas to discover, develop, and discuss, do people spend the majority of their time talking about themselves? Recent research suggests a simple explanation: because it feels good. P Well, according to onePstudy,Ptalking

 why should the drinking age stay the same

why should the drinking age stay the same

With the citation of President Bush's twin 19-year-old daughters for misdemeanor alcohol violations in Texas, an old debate has resurfaced в is the drinking age set too high? In a society where 18-year-olds are considered adults for most purposes and children as young as 13 are being punished as adults for their crimes, some consider keeping the legal consumption of alcohol out of range until age 21 as unfair. When the Bush sisters, Jenna and Barbara, were cited at a Mexican restaurant in Austin, much of the public outcry focused less on a 19-year-old attempting to procure alcohol, and more on the president's daughter being insensitive to the demands of having a parent in public office. But in most countries they'd have been perfectly within their rights to belly up to the bar. Talkback

 why do u want to become a teacher

why do u want to become a teacher

Thinking of becoming a teacher? Here are 10 reasons why you should For those considering a career in teaching, there are a number of potential motivators. Teaching can be a challenging profession, but there are numerous benefits to this career. Some feel a calling to impact the lives of students, while others are drawn to teaching for the ability to make a difference in the education system at large. So? Here are 10 reasons. 1. No two days are the same Some people flourish in a job situation where they know exactly what is expected. Yet for many, the thought of repeating the same task between the hours of 9-5 day every day sounds deeply unpleasant. If you re the type of person who avoids getting stuck in a rut, teaching may be just right for you. Teaching is a job with built-in variety,

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