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The fossil record suggests an enormous amount of biodiversity in the ages like the Eocene (jungles worldwide). Also, one time in the Campanian (starting 77,500,000 years ago for approx. 3,000,000 years), North America’s diversity of large dinosaurs exploded, and this correlates with a temperature rise.

I am a student from Singapore and I’ll be going to Melbourne for 3 months. Are there are any comparative studies pertaining to biodiversity/ecology/environmental biology I could do? E.g. comparing invasive species between these 2 countries, studying a certain organism’s (that can be found in both countries) niche, etc.? I need ideas urgently, and details/advice would be greatly appreciated!

I only have two, that I need.
Increasing the biodiversity of an ecosystem may result in more niches.
Diseases are more likely to spread in an ecosystem with high biodiversity than in an ecosystem with low biodiversity

1)Plasmids are transferred from one bacterium to another through
conjugation.
chemoautotrophs.
flagellae.
bacterial capsules.
2)The origin of membrane-enclosed cells is thought to include the formation of
extremophiles.
microspheres.
ribosomes.
eukaryotes.
3)Two species occupying the same niche would be __________ with each other.
in competition
at peace
coevolving
in harmony
4)The mineralized remains of an organism is called a(n)
fossil.
homologous feature.
adaptation.
population.
5)Calling a species by its genus and species name, such as Homo sapiens, is using
cladistics.
binomial nomenclature.
phylogeny.
taxonomy.
6)The isolation of two groups within a population from each other, and their adaptation to the point of being no longer able to interbreed is called
population genetics
gradualism.
speciation.
convergence.
7)The ecological role of a species is its
niche.
energy pyramid.
habitat.
community.
8)A classification system based solely on derived traits is called
phylogeny.
cladistics.
domains.
genetic drift.
9)The theory that organelles originated as separate prokaryotic symbionts is called
relative dating.
endosymbiosis.
mass extinctions.
geologic time.
10)Comparing a new fossil to a previously-dated fossil in order to determine its age is a form of
relative dating.
radiometric dating.
half-life.
geologic time.
11)Applying crystal violet stain, followed by iodine, alcohol, and safranin, a bacterial culture looked purple. The bacteria was
transduced.
Gram positive.
transformed.
Gram negative.
12)All the members of one species in a given area is its
biodiversity.
carrying capacity.
growth.
population.
13)The disappearance of a species from the Earth is referred to as
deforestation.
extinction
biodiversity.
recycling.
14)When a population does not show any net change in its gene pool, it is
using random mating.
in genetic equilibrium.
about to go extinct.
isolated reproductively.
Please help me.

When habitats are destroyed, there are usually fewer niches for animals and plants. This action would most likely not lead to a change in the amount of
a) biodiversity b) competition c)interaction between species d) solar radiation reaching the area

Which statement best describes extinction?
A) Extinction is very rare and was not seen at all until the last few hundred years.
B) Extinction is most common for generalist species that have large niches.
C) Extinction is always caused by human interferences to an ecosystem.
D) Extinction events have happened throughout all of Earth’s long history.
E) Extinction increases Earth’s biodiversity over long time periods
I am torn between D and E. It could be E because my text book says “The balance between the evolution of new species and extinction of existing species is what creates earth’s biodiversity.” So I don’t know which one best describes extinction. What do you think?