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
92 sathe best for the question 11. most animals and plants reproduce sexually. this means that dna is passed down to new organisms from two parental organisms. which of the following is a key advantage of sexual reproduction?
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Biology, 22.06.2019 06:30
Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?
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Charles darwin understood that evolution was a slow and gradual process. by gradual, darwin inferred...
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