If decomposers suddenly disappear from an ecosystem, then major cycle like nitrogen and carbon cycle will stop and no recycling of nutrients will occur.
Climate change can affect biomes because it can change their weather patterns, its like Hawaii having snow and freezing temperatures, hope this helps
The rooster and the hen must be homozygous dominant for their phenotypes, in order for their chicks to display both phenotypes.
Rooster= BB (Homozygous dominant for black color)
Hen= WW (Homozygous dominant for white color)