Why might it be hard to restore a wildlife population using custodial management?

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?

When a plant is genetically identical to its parent plant what is this called