In prophase of mitosis the nuclear envelope breaks up
The correct answer is B. Thymus gland: enables immature lymphocytes to mature into T cells
<span>Firstly, it is the only substance on Earth that is in liquid form at the temperatures commonly found on the Surface of our planet. Secondly, it is a superb solvent, meaning that other substances regularly and easily dissolve into it. This allows water to carry nutrients to cells, and carry waste away from them.</span>
I believe it’s Precambrian.