Jellyfish

  Jellyfish are a very interesting sea creature. There are many different types of jellyfish, such as the ones that sting- medusae- and the ones that don't sting- comb jellies. Jellyfish are 98% water. They are gelatinous or jelly-like.  A group of jellyfish are called a smack. Some jellyfish live less than one year or smaller ones lives couple day. They eat larvae, fish eggs, sometimes other jellyfish . Jellyfish have poisonous tentacles that have nematocysts cells. I think jellyfish are the coolest sea creature there is. 

Citations:

"Diving Doc: Jellyfish Stings." Www.sportdiver.com. N.p., n.d. Web. 05 May 2014.

What are n.p. & n.d.?  

 "Jellyfish - Enchanted Learning Software." Jellyfish - Enchanted Learning Software. N.p., n.d. Web. 05 May 2014.

 "Fun Facts about Jellyfish." JellyWatch Home. N.p., n.d. Web. 04 May 2014.

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Chemicals in Food

There are many chemicals in food nowadays. Chemicals such as pesticides, antibiotics and hormones are used in food to help production and supply.  These chemicals can be harmful if people consume too much. People can buy organic food which does not chemicals and is more fresh. There are laws that restrict how much chemicals there are in food.  You can get rid of some of the chemicals in your food by washing your fruit and vegetables and trimming meat. Maybe would should take some time to see what we are really buying at the grocery store. 

Citation added:

"Food - Pesticides and Other Chemicals." Better Health Channel. N.p., n.d. Web. 09 Apr. 2014.

"Nutrition Food | Health, Fitness and Nutrition." Health Fitness and Nutrition. N.p., n.d. Web. 09 Apr. 2014.

Patagonian Mara

Patagonian Mara is a large mammal with long ears. They look like a giant rabbit or a small deer.  They are mostly brown, gray, and white. They are fast runners with long back legs and they are herbivores. They live in the Argentina plains. They are also known as the Patagonian hare. 

Citation-

BBC News. BBC, n.d. Web. 08 Mar. 2014.

 "Patagonian Mara (Dolichotis Patagonum)." Patagonian Mara Photo. N.p., n.d. Web. 08 Mar. 2014.

"Patagonian Mara." Wikipedia. Wikimedia Foundation, 03 June 2014. Web. 08 Mar. 2014.

Human Brain

The human brain is the control center for the nervous system. The brain is divided into two parts, the left and the right. They are almost symmetrical, but not quite. The left side of the brain controls the muscles on the right side. The right side of the brain controls the muscles on the left side of the body.  The adult brain weighs about 3 pounds. The cerebrum makes 85 percent of the brain weight. The cerebral cortex is the largest part of the brain. The frontal lobes control self-control, planning, and logic. Some of the functions of the brain stem are to relay information from the brain to the body, and to control breathing, heart beat, and consciousness. 

Citation-

Lewis, Tanya. "Human Brain: Facts, Anatomy & Mapping Project." LiveScience. TechMedia Network, 06 May 2013. Web. 18 Feb. 2014.

Dogs

   Why can dogs hear so much better than humans? Dogs can hear higher frequencies than humans can. Puppies are born deaf and when some dogs age they may become deaf.  At the low end of the range dogs can hear about 40 hertz, while humans can hear about 20 Hz. At the high end dogs can hear about 45 Hz and Humans, 23 Hz. Dogs can hear higher pitches than humans do. They may bark at a vacuum cleaner because of the high annoying pitch. Dogs ears are more mobile. Dogs with ears standing up have better hearing then dogs with hanging ears. 

Citation:

"UCSB Science Line Sqtest." UCSB Science Line Sqtest. N.p., n.d. Web. 29 Jan. 2014.

 "Understanding a Dog's Senses." Understanding a Dog's Senses. N.p., n.d. Web. 27 Jan. 2014.

 "Nice Dogs." Flickr. Yahoo!, 25 May 2008. Web. 29 Jan. 2014.

Sharks

Great    White sharks are the largest predatory fish on earth. They can grow an average 15 feet. Hey have about 3,000 triangular teeth in several rows. Great whites have organs that sense small electromagnetic fields by animals. They eat sea lion, small whales, seals, and sea turtles. They live in cool coastal waters throughout the world. Of the 100 + shark attacks worldwide about one half are from great whites. Great whites can detect one drop of blood in 25 gal of water. They can sense tiny amounts of blood in the water up to 3 miles away.

 

"Great White Shark." National Geographic. N.p., n.d. Web. 15 Jan. 2014.

   

"Stanford Study: Great White Sharks More Endangered Than Tigers | The Unofficial Stanford Blog." The Unofficial Stanford Blog RSS. N.p., n.d. Web. 16 Jan. 2014.

MS

Multiple sclerosis (MS) is a disease that attacks the central nervous system which is made of the brain, spinal cord, and optic nerves. No one knows what the cause of the disease is. The symptoms are unpredictable and differ from one person to another. The disease occurs mostly in women from ages 20-40. MS is usually mild but some can loose the ability to walk, write, or speak. There is no cure for MS but there are some medicines may slow it down and control the symptoms.  

Citation 

"National Multiple Sclerosis Society." What Is Multiple Sclerosis? : National MS Society. N.p., n.d. Web. 06 Jan. 2014.

"MedlinePlus." MedlinePlus. N.p., n.d. Web. 04 Jan. 2014.