Biology, 21.07.2019 06:00 anthonygarib24
Charles darwin understood that evolution was a slow and gradual process. by gradual, darwin inferred a "stepwise" process with a species evolving and accumulating small variations over long periods of time until a new species was born. if evolution is gradual, there should be a fossilized record of small, incremental changes on the way to a new species. but in many cases, scientists were unable to find these intermediate forms. in 1972, evolutionary scientists stephen jay gould and niles eldredge proposed another idea of evolution. they suggested that species are generally stable, changing little for millions of years. this stable species becomes the victim of a rapid burst of change that results in a new species and that leaves few fossils behind. gould and eldredge proposed this new theory called a) gradualism. b) catastrophism. c) adaptive radiation. d) punctuated equilibrium.
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Biology, 21.06.2019 21:30
In which case would a scientist choose to use a dissecting microscope rather than a compound microscope
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Biology, 22.06.2019 01:00
All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time
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Biology, 22.06.2019 01:00
Which of the following is an example of competition that could be found in a forest? question 14 options: deer eat berries and their droppings seed new areas creating more berry bushes two fox populations utilize the same rabbit population as their main food source two hawk populations utilize the same scorpion population as their main food source lack of sunlight due to changes in the seasons restricts the growth of certain plants
Answers: 1
Biology, 22.06.2019 08:30
Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because
Answers: 2
Charles darwin understood that evolution was a slow and gradual process. by gradual, darwin inferred...
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