"new caledonian crows consume a wide range of foods. these crows require tools to extract the larvae of wood boring beetles from their burrows. a bird pokes a larva with a stick until the larva is disturbed enough to bite the stick and hang on to it. the bird is then able to pull the larva out of its burrow. these larvae, with their unusual diet, have a distinct chemical that can be found in the feathers and blood of crows—allowing scientists to determine the percentage of the crows’ diet that is made up of beetle larvae. scientists found that the beetle larvae are so energy-rich that just a few could satisfy the daily energy requirement for a crow. the crows with the greatest skill in using a twig as a tool benefit most in terms of nutrition.
state one reason why the offspring of crows skilled at using twigs as tools would have the greatest chance of survival"
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Biology, 21.06.2019 20:00
Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256
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Biology, 21.06.2019 23:30
Aboy with an extra x chromosome probably has which of the following syndromes?
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Biology, 22.06.2019 11:00
What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.
Answers: 2
Biology, 22.06.2019 17:40
You find a fossil that you are sure shows evidence of bipedalism. you know this because which of the following anatomical traits is present? a. thighbones that angle in toward the knees b. a narrow pelvis c. opposable hallux d. posterior position of the foramen magnum
Answers: 1
"new caledonian crows consume a wide range of foods. these crows require tools to extract the larvae...
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