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How do jellyfish sting?

Why do jellyfish sting?

Jellyfish use their venom as a defence  mechanism to protect itself and to kill prey. Their venom is made of toxins that attack the heart, nervous system and the skin cells making its prey paralysed or shocked. The jellyfish has 15 tentacles and each tentacle has about 5,000 string cells, which are triggered by by the presence of the chemical on the outer layers of its prey. The cells in the strings are called cnidocytes and the venom is actually called nematocysts. The venom paralyses 

Why do skunks smell?

Why do skunks smell.

Skunks smell because they have 2 glands. First the skunk produces the spray in the glands on the tail. It is actually a type of unpleasant odor that they use to defend themselves from their own predators. The name of the odor is called N-butyl mercaptan that they make from their tails. The smell is actually made of a sulphur mixture. The smell also contains chemicals like thiols which actually has a bad smell. So that's the way the skunk builds its smell to defend themselves.

T4W4 writing

 I am so exited I'm not going to camp. Why because I throw up on food almost every time. I like to learn and study at school so I can be smart. We also get time to do our schoolwork all day. I also always get to read fun books. I also get some time to do some biology and chemistry. I love to learn about bugs and spiders and we can make insect enclosures in the containers I brought.

 

Around the world we have an ecological cascade meaning that if there were no whales there would not be that much fish in the ocean. So that means that whales are actually apex predators. We find out that whales eat fish , krill and shrimp but that is not what they only do in the ecosystem, and we start to kill whales because of what we do but that does not mean we should kill all of them if we kill all of them and the fish and krill will decline their populations. They can help the ocean as well.

The whales first go down under the dark waters to feed on fish and krill that they can catch then after that go up to the photic zone where there is enough sunlight where there is enough light for photosynthesis to happen. When they are upto the photic zone they come out to release something called fecal plumes which are rich in iron and nitrogen, those nutrients are really scarce in the waters, then those fecal plumes fertilize the plant planktons, the place where plant planktons are only where plants can survive: the photic zone. They also kick up plankton up into the photic zone so that it gives out more time for the plankton to reproduce before it sinks down to the bottom called the abyss. Plant plankton don't only feed the animals of the sea but they also absorb carbon dioxide from the atmosphere. Then eventually it sinks to the ocean floor, it takes the carbon out of the circulation, down to a place where it remains for years. 

So that’s why we should not kill all the whales because if we kill all the whales in the ocean there will not there will not be enough plant plankton in the ocean to help the fish so we should keep whales all all alive. The more whales there are, the more fish and krill there will be to sustain the whole ocean. So don’t kill all the whales in the ocean, killing whales ruins the whole ecosystem. Don’t ever kill a whale!

W1T4 reading

W1T4

 At the end of the driveway, the world skims past.

At the end of the world, the world is skimming away.

Kids slide through on the pathways and rubbish bins.

Kids wander away, all around the pathway.

In summer blaze and autumn falls

Kids walk home in their school uniforms.

Inside their jumpers, their hands warm 

Inside their jumpers, the kids feel warmth everywhere they go

The boy plays around  with his friends: Not yet seeing not yet  knowing

That what's gone is a new beginning, that what begins is already growing slower and slower  

Adults with their jogging legs

Swish by in trains to adult workplaces