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Geologic Time Periods. what happened in each period

  precambrian earliest :
1st organisms. single                                                                  celled oxygen present                                                                  later multicelled  orgasms
                           

540 mya:
lots of different types of orgasms
earliest animals with backbone
lots of carbon dioxide

490 mya:
lots of animals without skeleton
early shellfish, trilobites
nautilus, starfish,  fish.
1st green plants of fungi
end of ice age


443 mya:
1st advanced plants
jawed fish with armour
more sellfish

Devonion:
1st ferns

354 mya:
1st fir trees with seeds
1st wingless insects
1st amphibians
some animals from earlier periods die out
early sharks
early reptiles
early trees
vertebrates
trilobites disappearing
glaciers form
winged insects

permian 290:
land masses have formed 1 continent pangaea
glaciers disappear warming up
lots of reptiles
1st cone bearing trees
beetles and flies appear
 lots of lives in the ocean
251 mya - 95% life>extinct 

                                26/10/2017

248 mya:
dinosaurs appear
first mammals and crocodiles appear
modern corals and fish

206 mya:
lots of different dinosaurs
ferns and cone bearing plants
mammals common but small
first bird and lizards
land mass pangaea breaks up into gondwanaland and laurasia
high carbon dioxide levels

144 mya:
lots of dinosaurs including tyranasaurs
new types of insects
flowering plants appear and became plentiful
modern crocodiles and sharks
early birds appear
gondwanaland breaks up
rocky  mountains appear carbon dioxide similar to today

PALEOGENE:
modern plants
lots of different mammals
dinosaurs extinct
primitive whales
first grasses
rapid changes in mammals
climate cools
ice age begins and ends during this period

NEOGENE:
modern climate
modern mammals and birds
horses evolve from dog like animal
lots of grasses
first apes
southern alps of nz appear

QUATERNARY 1.8 mya present
anatomically

1. Why does NZ not have any crocodiles. 2. Why is NZ's only mammal a bat? long tailed bat 3. No Evidence of wooly mammoths in NZ. Explain why. 4. Wetas and Tuataras are living fossils. What does this mean? Suggest why we have those creatures but Australia does not.

changes in nature

Saving the whales.


1. we should consider saving whales because they are just living things like us humans.

2. They have no harm to us humans.

3. they are beautiful living creatures that help the circle of life.

4. so when we kill or hunt down this poor animal we are actually killing the circle of life.

5. People kill them just because they got scared.

6. the whale only attacks you when you scare him or try to harm the poor animal.

7.

Gabriel - basketball player.

Richie - Basketball player.

Ansh - supporter for Gabriel.

Isaac - supporter for Richie.



Ansh and isaac talk to their team that they support and then richie and gabriel play a game of basketball and then the problem is when gabriel wins and then richie gets mad then starts a fight and then isaac encourages richie to keep on fighting and ansh says to stop and then isaac and ansh start a conflict and then it becomes a massive conflict.

Question

1. What does introduced species mean?
2. why were they brought to nz?
3. why have their numbers exploded?
4. what affect do they have on our native plants and animals?
5. how is doc trying to get rid of them?
6. choose 2 introduced species?
write about how they are affecting our native forests grasslands birds?
what control methods are being used?
are these methods having any success?

kaitiakitanga

Kaitiakitanga



Nuclear disasters.
1. Fukushima


- what? It's a dangerous nuclear disasters

- where? It's in Japan

- why are these important? So people will know what they are and so they can avoid them.

- what affect have they had on the areas around them? They poison plants and vegetables so when you get it out of the ground you can't actually can't eat it because of Fukushima

- what has been done to protect the surrounding areas From Chernobyl radiation?

- what have we learnt from them?




2.chenobyl



- what?

- where?

- why are these important?

- what affect have they had on the areas around them?

- what has been done to protect the surrounding areas From Chernobyl radiation?

- what have we learnt from them?