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Question 1

what is darwins theory of evolution

Answer 1

predators and competition for resources and disease affect an organism’s chance of surviving and reproducing. Individuals with characteristics best suited to the environment have a better chance of survival so are more likely to breed. The alleles will be passed on to the next generation and the beneficial characteristics become more common in the population.

Question 2

how do bacteria provide evidence for evolution?

Answer 2

resistant bacteria are better able to survive so it reproduces more and live longer. antibiotic resistance passed on shows natural selection. Provides evidence as bacteria become better adapted to the environment in which antibiotics are present and the characteristics become common

Question 3

facts about ardi

Answer 3

lived 4.4 million years ago
-climbed trees
-long arms and short legs like an ape and her brain size was like a chimp
-walked upright

Question 4

facts about lucy

Answer 4

lived 3.2 million years ago
-arched feet, more adapted to walking than climbing (walked upright)
-legs and arms size is between humans and apes
-the brain is bigger than Ardi

Question 5

Leakey’s discovery of fossils from 1.6 million years ago

Answer 5

homo erectus:
- more human than Lucy
-short arms and long legs and his brain size was larger than Lucy
-the structure of their feet showed he was better at walking upright

Question 6

how did the homo habilis make their tools?

Answer 6

made pebble tools by hitting rocks to make sharp flakes to scrape meat from bones

Question 7

how did the homo erectus make their tools?

Answer 7

sculpted rocks into shapes to make tools like hand axes to hunt

Question 8

describe the homo neanderthalensis tools

Answer 8

more complex tools.evidence of wooden spears

Question 9

describe the homo sapiens tools

Answer 9

arrowheads and fish hooks

Question 10

how can these tools be dated from their environment

Answer 10

stratigraphy