it simply means the cell's DNA is surrounded by a membrane. therefore the nucleus houses the cell's DNA and directs the synthesis of the proteins and ribosomes the cellular responsible for protein synthesis.
It is important because you need vitamins and minerals from them e.g. Scurvy no vitamin c
Among the pre-historic species associated with the LA BERA TA PITS are pleitocene ,dire wolves ,short faced bears, ground sloths, and the stste fossil of california, the saber-toothed cap..... i hope it will help you.... :)
Metastatic melanoma ( if i’m not wrong )
cancer that begins in the skin cells, which spreads to other parts of the body ( in this case liver and brain)
Animal plays important role in angiosperm reproduction either by visiting flowers for the process of pollination or eating fruits which aids in continuation of generation