We can rule out small fish and grasses. My guess is that zooplankton get their energy from phytoplankton, because phytoplankton use photosynthesis to get their energy.
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According to natural selection process, the trend that will occur is that the number of organisms with harmful characteristics will decrease while organisms with neutral or beneficial traits will increase in the plant population
<h3>What is natural selection?</h3>
Natural selection is the process by which organisms with favorable features and characteristics that enable them to adapt to their environment survive while those with unfavorable traits die off.
In a changing environment, it will be observed that the organisms with the most favorable traits will be the most dominant in the environment.
Therefore, for the Year 5 and Year 10, the most likely trend that will occur is that the organisms with harmful characteristics will be decreasing in the plant population while organisms with neutral or beneficial traits will likely be increasing in number.
Learn more about natural selection at: brainly.com/question/14385908
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Food takes about 6 to 8 hours to completely pass through the digestive tract.