<span>C. less energy than X-rays and gamma rays.
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Males have XY and females have XX
Without enough light, a plant cannot photosynthesize very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.
A, Cold/dry air sinks below the warm/ wet are it is pushed upwards