Chum salmon (oncorhynchus keta) are born in freshwater environments and then migrate to the sea near the end of their lives, they return to the freshwater stream where they were born to spawn. in freshwater, water constantly diffuses into the body and ions are lost from the body. in salt water, body water diffuses out of the body and excess ions are gained from the water. a salmon's gills have special cells to pump salt in or out of the body to maintain homeostasis. in response to the salmon's moves between freshwater and salt water, some cells in the gills are produced and others are destroyed. these changes made in the cells of the gills during the lifetime of an individual salmon are an example of?a. trade offb. evolutionc. acclimatizationd. adaptation
Answers: 2
Biology, 21.06.2019 17:00
How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey
Answers: 2
Biology, 22.06.2019 03:20
Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics
Answers: 3
Chum salmon (oncorhynchus keta) are born in freshwater environments and then migrate to the sea near...
Mathematics, 27.03.2020 05:30
Mathematics, 27.03.2020 05:30
Mathematics, 27.03.2020 05:30
Mathematics, 27.03.2020 05:30
Mathematics, 27.03.2020 05:30
Mathematics, 27.03.2020 05:30
English, 27.03.2020 05:30
English, 27.03.2020 05:30
History, 27.03.2020 05:30
History, 27.03.2020 05:30
Mathematics, 27.03.2020 05:30