Biology
Biology, 21.07.2019 19:00, amandavelez12122005

The crucian carp , a scandinavian fish , thrives in shallow ponds that freeze over during winter. while other creatures in the pond does from lack of oxygen , these carp are able to obtain energy through a biochemical pathway that does not require oxygen this characteristic is an example of a

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Chemistry, 21.07.2019 22:00, missy922527
Ascientist did an investigation on the growth of koi fish. he selected forty newly hatched koi from the same clutch of eggs. he separated the koi into four groups and placed each group in a different sized pond. none of the ponds had any predators that would eat the koi fish. the amount of food available to the koi and the water quality of each pond differed based on the size of the pond. larger ponds had more food available and better water quality as the fish grew. after 15 months, the scientist measured the length of each koi fish. using these measurements, he came up with an average koi size for each pond. effect of pond size on koi fish growth size of pond average length of koi 500 gallons 18.2 centimeters 1000 gallons 25.6 centimeters 2500 gallons 30.8 centimeters 5000 gallons 35.3 centimeters based on the scientist's results, which of the following is true? a. koi fish grow fastest in ponds with poor water quality. b. koi fish grow fastest in ponds with a high population density. c. the growth of koi fish is determined entirely by genetics. d. the growth of koi fish is affected by the environment of the fish.
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Biology, 25.07.2019 05:00, ninilizovtskt
Mosquito fish found on the islands of the bahamas live in various isolated freshwater ponds that were once a single body of water. when several male and female mosquito fish are taken from two isolated ponds and placed into a single pond, the breeding preference of each mosquito fish is for fish from its own original pond. which of these most likely resulted in this breeding preference? a. predators in the pond influenced the breeding preferences of the fish. b. speciation due to reproductive isolation influenced the breeding preferences. c. competition for a suitable mate influenced the breeding preferences. d. availability of food influenced the breeding preferences of the fish.
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Social Studies, 16.10.2019 20:00, lrasanaoaksandfurana
Refer to the paragraph on crucian carp. gills serve multiple functions in fish in addition to gas exchange. given the large surface area of gills with lamellae, what is the most likely explanation for why crucian carp cover protruding lamellae in their gills when levels of oxygen are normal?
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