Answer:
All the offspring have genotype RrTt
Phenotype is Pink and tall snapdragon
Explanation:
Given 
Tallness ( T) is dominant to dwarfness (t)
Red (R) flower color is dominant to white (r)
It is given that heterozygous condition results in pink (Rr) flower color which means that the allels for color of flower show co dominance
Genotype of dwarf red snapdragon is RRtt
Genotype of a plant homozygous for tallness and white flowers is rrTT
The punnet square representing the cross between RRtt and rrTT is as given below-
 Rt     Rt         Rt     Rt
rT	RrTt      RrTt	RrTt    RrTt
rT	RrTt      RrTt	RrTt    RrTt
rT	RrTt      RrTt	RrTt    RrTt
rT	RrTt      RrTt	RrTt    RrTt  
Thus all the offspring have genotype RrTt
Phenotype is Pink and tall snapdragon
 
        
             
        
        
        
Answer:
(1) Nitrite poisoning 
(2)  Its cause is elevated levels of nitrite in the pond or culture system water. 
 
        
             
        
        
        
Since the cell is in a shoebox, we can assume this cell is a plant cell. the balloon most likely represents the vacuole, which is the largest organelle in the plant cell. the marbles could represent ribosomes, but ribosomes aren’t the only round organelle so i’m not sure about that one.
        
                    
             
        
        
        
If the climate is hot and dry then the biome will be a desert, if the climate is hot and wet, the biome will be a rainforest, if the climate<span> is dry and cool it would probably be a coniferous forest, if cold and wet, deciduous forest.</span>