The solar energy of the sun is converted into chemical energy by the plants
The kinetic energy that occurs when your hands are rubing together
Your answer would be $4 times $y.
Hope this helps; have a great day!
Continental drift happened around the Jurassic period, 175 million years ago.
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The variations might help the organism to survive if there is a change in its environment
Eg heat resistant bacteria
The variation might help the organism survive predators
Eg. Green beetles blend with green leaves thus disabling crows to spot them
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