A decaying leaf on the forest floor has a C:N mass ratio of 50:1. A decomposer fungus with a biomass C:N ratio of 12:1 is breaking down the leaf and using it for growth with an efficiency of 40% (the fungus respires 6 g of C for every 10 g it decomposes and takes up). How much additional nitrogen does the fungus need to translocate from soil for each gram of biomass C growth

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.