866545
Descrição
Mapa Mental por Evangeline Taylor, atualizado more than 1 year ago
|
Criado por Evangeline Taylor
mais de 11 anos atrás
|
|
Fossils
- Fossils are the remains of plant and animal
from many years ago
- Fossils form in rock in one of three ways:
- 1) Form Gradual Replacement by
minerals ( Most Fossils happen
this way)
- Teeth, shells, bones ect... - don't
decay easily
- Eventually replaced by
minerals as they decay
forming a rock like
substance
- Eventually replaced by
minerals as they decay
forming a rock like
substance
- Teeth, shells, bones ect... - don't
decay easily
- 2) From casts and
impressions
- Sometime fossils are form when
organism is buried in soft materials
(like clay)
- It hardens around it, organism decay
- Leaving a cast (i.e Animal borrow
or plants roots)
- Leaving a cast (i.e Animal borrow
or plants roots)
- When footprints in clay (soft
material) leaving a impression
when then it harden.
- It hardens around it, organism decay
- Sometime fossils are form when
organism is buried in soft materials
(like clay)
- Form Preservation in place
where no decay happens
- In Amber ( Fossilised resin)
- Like in Juarssic Park
- No oxygen or moisture so decay
microbes can't survive.
- Like in Juarssic Park
- Glaciers
- Too cold for decay
microbes can't survive
- Too cold for decay
microbes can't survive
- Peat bogs
- Too acidic for decay
microbes to survive
- Too acidic for decay
microbes to survive
- In Amber ( Fossilised resin)
- 1) Form Gradual Replacement by
minerals ( Most Fossils happen
this way)
Quer criar seus próprios Mapas Mentais gratuitos com a GoConqr? Saiba mais.