October 20

Landfill

In class today we watched a BTN video about where rubbish goes and about what Landfill is. I learnt that the waste at the Landfill place can go under to 16 meters underground, there can be up to 8 layers of rubbish stacked on top of each other with a layer of soil in between. Once a layer is filled in trees, shrubs and grass can be planted over it. Landfills usually last for about 50 years before they have to find a new sight for our rubbish.

After we watched the video we played a game teaching us which rubbish goes in the right bin. What you had to do in the game was you had pieces of rubbish, clothes, food scraps (things like that) and you would have six bins. The bins are Kitchen caddy, Worm farm, Organic bin, Recycle bin, Waste to landfill bin and compost bin. Then you would put the rubbish into the right bin. After watching this video and playing the rubbish game I understand a bit more about what we can do to help our environment. I would like to ask some Questions about rubbish: What is Landfill? What do you think is the long term impact of using landfills? What do You do to help save our Environment? If you would like to watch the video about Landfill here is the link http://www.abc.net.au/btn/story/s3953606.htm.  

 

 

October 17

Macquarie Island – Elephant Seals

Elephant seals are large,ocean loving mammals who are earless. There are two species of Elephant Seals the Northern Elephant Seal and the Southern Elephant Seal. Both these species were hunted to the limit of extinction by the 19th century, but the numbers have gone up higher.

 

Elephant Seals Weight and Height

Southern Elephant Seals are the largest of all Seals. Males can be over 20 feet (6 meters) long and weigh up to 8,800 pounds ( 4,000 kilos). The female Seals are much smaller at 10 feet (3 meters) in length and 1,500 pounds (600 kilos). The Northern Seal is the second largest Seal in the world, after the Southern Elephant Seal.

 

Elephant Seals Food

Northern Elephant Seals have a mixed diet. The diet includes Sharks, Flatfish, Ratfish, Crab, Squid and Octopus. Southern Elephant Seals mainly eat Fish and Squid, but the Seals have been known to eat eat Fish from the ocean’s darkest depths.

 

Elephant Seals Predators  

Elephant Seals have no land predators but Great White Sharks and Killer Whales prey on Elephant Seals.

 

Population of Elephant Seals

By 1910 it was estimated that there were less than 100 Seals, all found on Guadalupe Island off Baja California and Mexico. Today The Northern  Elephant Seals population is approximately 150,000 with 124,000 which they are in California Waters.

 

Habitat

Northern Elephant Seals are found in the North Pacific, from Baja California, Mexico and Alaska. During breeding season, they live on Beaches and on Offshore Islands.

 

References Glossary
https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=elephant+seals+habitat    +https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=+elephant+seals+predators
https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=elephant+seals+facts
https://en.wikipedia.org/wiki/Elephant_seal
https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=elephant+seals+facts
https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=what+do+elephant+seals+eat  https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=what+do+southern+elephant+seals+eat
https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=+population+of+elephant+seals
https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&safe=active&ssui=on#safe=strict&q=+population+of+elephant+seals
Breeding – the mating and production of offspring by animals.
Baja California – a narrow Peninsula in Mexico
Species –  a group of living animals that can exchange genes or interbreeding
Guadalupe Island – Guadalupe Island is a volcanic Island located 241 KIlometers off the West of Baja California Peninsula