2. Evidence for Climate Variation Flashcards
1
Q
What is pollen?
A
Pollen is the microscopic grains containing the male reproductive cells of a plant.
2
Q
Can pollen identify plant specie and climate?
A
Yes
3
Q
Describe Riversleigh fossil site?
A
- Documented the change from humid, lowland rainforests
of the Oligocene, to the dry eucalypt forests and
woodlands of the Miocene
Older Riversleigh local faunas represent rainforest conditions
because of…
→ high species diversity, indicating a rich, finely divided resource
base
→ presence of animals only known from modern rainforest
communities
→ absence of grazing animals, indicating a closed forest canopy
4
Q
Describe Naracoorte fossil site.
A
- Fossil evidence of climate change through owl pellets and
a series of pitfall fossils (animals fell in caves and
fossilised) - Abundance of modern species is used to indicate the type
of vegetation such as woodland or grassland.
→ abundance of fossil types indicate environment went
through a warm, dry period during the Interglacial period
5
Q
What is HEAVIER o18 or o16?
A
o18
6
Q
How many protons & neutrons are in o16?
A
8 protons, 8 neutrons
7
Q
How many protons & neutrons are in o18?
A
8 protons, 10 neutrons
