Zebrafish

Eh Htoo - we are learning about zebrafish. They are transparent and live in India's Freshwater lakes or rivers. Scientists study them because they are transparent and reproduce fast, scientists breed hundreds and thousands of zebrafish to study them.Then Scientists kill the fish in chemicals and cut it up. If they cut it in different shapes like coronal, cutting in half vertically, separating the front and the back, transverse cutting in half horizontally, cutting the head off the body Sagittal cutting in half vertically, cutting the left side away from the right side. When they cut it it will show different parts.Scientists kill way too much of the zebrafish.







These fishes are a year old and and they are cut Transverse you can see a lot of meat.

ZEBRA_FISH

 

Zebrafish - Wednesday

 

How animals evolved from water to live on land

 How animals evolved from water to live on land

EH HTOO

The first organisms to venture onto land (apart from plants) was around 30 million years Ago. A fish called coelacanth was one of the first to venture onto land - into a shallow marine environment. Scientists think it was either looking for food, avoiding predators or laying eggs in the shallow waters. It had to develop a stronger rib cage in order to support its body weight out of water (as in water all things are more buoyant). Over time, they also evolved lungs so they could breathe, and their fins became more boney and became strong legs which helped them move.  Years after the first amphibian like animals came along the first one had fins and years after it had half fins and legs after a lot more years it has all legs.

Early fish started to go close to land then after a long time the fish. Involved to go on land for a short time their limbs got stronger then the fish involved  to have lunges then the first amphibian like animals come about after years of evolution it was the rain of the.    

•  First had to evolve stronger rib cage, shoulders and limbs to hold up its own body weight

How do animals evolve from being in water to on land

 Life first emerged in the oceans nearly three and a half billion years ago when they got more complexed they started to swim close to land years later they started to go on land for shorts times after a long time they involved to have lungs and stayed on land for longer but there still went back in the water to cool off but they can not breath in the water anymore. When it got dryer the Reptiles ruled the world so some Reptiles did not go in the water anymore.   

Timeline of evolution

 

Adaptations

 

Different kinds of early humans

 

Study of an animal

 

How do animals evolve from being in the water?

If New Zealand was 100 people

 

Genders
51	female
49	male
Of the 100 people in our village
Birth place
73	New zealand
3	India
5	England
2	South Africa
3	China
2	Australia
12	Other overseas countries
Ethnicities in NZ
European	70
Maori	17
Pacific	8
Asian	15
Other	1
Middle Eastern/African/Latina	1
language we use
none to younge	2
english	95
other	15
samoan	2
maori	4
chinese	2
Top ten overseas brithplaces
china	3
england	5
india	3
southafrica	2
australia	2
nz	81

Room 8’s graph interpretation

Room 8’s graph interpretation

Rosie and Chanel - 15 year olds don’t get bullied as much as Year 9’s.

Kymani and Boston - Year 5’s get physically hurt the most.

Kordell and Saia - Almost 40% of year 5’s and year 9’s were made fun of or called names. 

Eve and Lemeki - Year 9’s are called names equal amount to year 5’s. 

Nitika and Litia - No 15 year olds reported they had been made to do things they don’t want to do. 

Stanley - 15 year olds get bullied the least because they are more mature. 

Mariah - Almost 40% of year 5’s and year 9’s were made fun of or called names BECAUSE their younger. 

Michael and Wesley - Year 5’s get bullied more than Year 9’s or 15 year olds.

Hope and Maria - Only year 9’s reported that they had embarrassing things posted about them online. 

Ana and Senitila -  15 year olds are not being pushed around to do things.

Fereti and Mathew - More year 5’s feel left out of games than Year 9’s and 15 year olds.

Railey and Davlyn - 60% of YEar 5’s reported that they have been bullied in some kind of way.

TRUE OR FALSE?

100% of Year 5’s have been bullied. False

0% of 15 year olds reported they had something embarrassing posted about them online. True

More than 20% of Year 5’s reported having something stolen from them.  True

50% of  YEar 9’s have been bullied. True

20% of YEar 9’s reported they have been purposefully left out of games.  True

Writers Use Misleading Graphs To Manipulate You