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Deduce why fossils of soft organisms, such as jellyfish, are extremely rare?
The structure of their body when they are decomposing doesn't maintain is structure for long enough to create a fossil.

Should we use genetic technology to bring back extinct species?
Have you even watched Jurassic Park. There is no point in recreating species as it is messing with nature and they would have no place in the ecosystem.

Compare and contrast absolute and relative dating fossils?
Relative dating measure the age of the surrounding layer of dirt to determine the approximate age of a fossil. Absolute dating is where they solely test the age of the fossil and they use radiometric dating.

Justify or refute this statement: ‘Australians have a responsibility to conserve their unique species?'
Yes, because species they apart of the ecosystem and by not protecting them, Australia's natural landscape will suffer.

Describe how homology supports the idea that species have changed over time (with examples)?
You can see physically through bone structure of many animals that they all have very similar structure.

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applies statistics to biological molecules
Compare structural and developmental stuff.

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vestigial organs: reduced, degenerate or non functional.

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Comparative Anatomy

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Extinction: the death fall members of one species

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Absolute dating: determining the age of a material. rate of decay of radioactive isotopes.

Relative dating: order of past events.

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Fossils: evidence of an organism from a former geological time. It is rare for nutrients to escape

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Evolution: the process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth.
Extinction: Everything/one has died in the species.
Fossil: the remains or impression of a prehistoric plant or animal embedded in rock and preserved in petrified form.
Organism: an individual animal, plant, or single-celled life form.
Species: a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
Asexual Reproduction: (of reproduction) not involving the fusion of gametes.
Sexual Reproduction: The production of new living organisms by combining genetic information from two individuals of different types (sexes). In most higher organisms, one sex (male) produces a small motile gamete which travels to fuse with a larger stationary gamete produced by the other (female).

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Does the evidence cited suggest there is more benefit to a species to reproduce asexually or sexually? Use information in the article to defend your answer. 

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Does the evidence cited suggest there is more benefit to a species to reproduce asexually or sexually? Use information in the article to defend your answer. 

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There is evidence for sexual reproduction being the best way to reproduce, as without sexual reproduction there would be barely any variation in the population, which means that organisms wouldn't evolve to suit their environment. This means that eventually we may not be able to even survive in our own environment.

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In paragraph 1 the term evolutionary selection is used. Try to explain what this means.

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In paragraph 1 the term evolutionary selection is used. Try to explain what this means.

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Evolutionary selection is where the fittest survives to reproduce. Evolution is the adaptation to environmental pressure

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Explain what is meant by sexual selection?

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Explain what is meant by sexual selection?

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Sexual selection is where evolution is helped by the selection of genes through reproduction.

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- improves the gene pool
- healthier population
- reduces mutations

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What disadvantage of sexual reproduction was cited by one of the scientists?

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What disadvantage of sexual reproduction was cited by one of the scientists?

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Sexual reproduction is less efficient in reproducing. It is faster for asexual reproduction to occur.

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How much variation would you expect to see in a species where very large numbers of offspring are produced by asexual reproduction?

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How much variation would you expect to see in a species where very large numbers of offspring are produced by asexual reproduction?

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there would be less variation because they share all of the same genes, but there is a higher possibility for genetic mutations to occur.

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What is the advantage to a species when very large numbers of offspring are produced?

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What is the advantage to a species when very large numbers of offspring are produced?

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More competition for mates, leads to stronger offspring. More chance of species survival. Less competition against other species

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Why do men exist?

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Introduction

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Why have some species become extinct when others have not?

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Why have some species become extinct when others have not?

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Adaptation to environment
Food chain
Breeding amount + process
Hunting and eating
Natural disasters/ global warming
Human impacts
Natural selection
Food available

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What do fossils have to do with evolution

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What do fossils have to do with evolution

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To show where organisms have lived.

To show how organisms have changed over time.

Show progression over time.

Piece of evidence that determines development of characteristics, age of fossils and preserve traces of animals, plants and how they have changed.

They show extinct animals and their characteristics that have changed over time.
Show that evol

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Process of an organism adapting to become stronger and a better version of itself.
Species evolving and adapting

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No, because the environment is always changing and we develop and adapt to the new environments

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Why do Australian animals differ from animals in Africa?

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Why do Australian animals differ from animals in Africa?

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They have different surroundings
Environmental pressures causes adaptation
Food available
Habitat

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Do humans share genes with every living organism on Earth? 

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Do humans share genes with every living organism on Earth? 

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We have common ancestors
Some animals share similar characteristics

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Do humans share genes with every living organism on Earth? 

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Do humans share genes with every living organism on Earth? 

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We have common ancestors
Some animals share similar characteristics