Answer: 
Blue offspring only
Explanation:
If A blue budgie is crossed with a white budgie.
i.e yyBB or yyBb × yybb
let use yyBb for blue budgie,so we have; yB, yb, yB, yb representing the columns on the horizontal rows of the punnet square.
on the other hand, in white budgie yybb, we will have yb, yb, yb, yb representing the rows on the vertical column of the punnet square.
if a dihybrid cross occurs among these representative, all progeny in the punnet square will be yyBb, showing that they are all Blue offspring only.
 
        
             
        
        
        
Endothermic reactions use or absorbs energy for the process to occur. Exothermic reactions release energy to the surroundings as the process occurs. In endothermic reactions, reactants are more stable than products while in exothermic reactions, products are more stable than reactants. 
        
                    
             
        
        
        
What does the graph look like?
        
             
        
        
        
Answer: A BIOME is an area of the planet that shaves similar conditions of climate, fauna (animal life), flora (plant life) and geography . The correct option is 1.
Explanation:
BIOME is defined as large natural terrestrial ecosystems which shares similar conditions of climate and consists of plants and animals that equally have common characteristics with their environment. The word terrestrial is used because plants form the bulk of the community in an ecosystem. The type of vegetation in a biome is largely determined by climatic factors, especially rainfall and temperature. Regions throughout the world which have similar climates have similar biomes. This causes zones of different biomes to occur from the equator to the Arctic and to the Antarctic. For example,
--> in equatorial and tropical areas where temperature is high all the year round tropical forests occur;
--> in temperate regions coniferous and deciduous forests occur;
--> while treeless plains (tundra) are found in the cold arctic regions.
Climates also changes with height above the sea level.