When the temperature reaches 0˚C (32˚F), the top layer of the lake freezes and turns into ice. In solid form, water molecules are less dense and thus ice floats on the top of the lake.
This solid barrier prevents any wind-induced mixing as well as protects the relatively warm water underneath. Furthermore, light is also blocked so that photosynthesis is inhibited during this period. As the lake water is separated from the atmosphere, no direct oxygen diffusion occurs.
All these factors together causes a more even distribution of nutrients and gases in a lake in winter.
Answer: Apolipoprotein Al-milano( Apo Aim)
Explanation: Apo Aim is a mutant version of the protein Apolipoprotein Al or Apo al, this mutant protein Apo Aim is more effective than Apo Al at removing cholesterol from cell and desolving arterial plaque and also functions as anti oxidants.
Sex hormones, since they are responsible for developing secondary sexual characteristics.
The best answer is)
<span>It enables photosynthesis by facilitating primary growth of the plant.
The apical meristems are similar to stem cells in humans, and continue dividing indefinitely over the life of the plant. The cells are unspecialized, and only become specialized after being created. Apical meristems are the primary meristems, and constitute the primary growth of the plant, growing into organs such as leafs, flowers, and roots. </span>
