Answer:
1. They can have constant trained medicals around them, which is good because they could have emergencies.
2. They won’t be alone in there houses, but instead have people and life surrounding them.
3. They’ll have people taking care and looking out for them, other than family.
4. They’ll be comfortable, more happy, and more likely to live a happy end to their lives.
Explanation:
 
        
             
        
        
        
Answer:
The correct answer is d. Oxygen
Explanation:
Phytoplanktons are responsible for the fixation of approximately half of the global carbon therefore seawater has high CO2 concentration which is required by phytoplanktons to make their food.  
They are the primary producers of oceans and they are responsible to support the food chain of oceans. Factors that can limit their growth are mainly sunlight and nutrients like phosphorus, nitrogen, etc.
As phytoplanktons are photosynthetic they release oxygen itself as a byproduct therefore oxygen is not a limiting factor to phytoplanktons. So the right answer is d.
 
        
             
        
        
        
Ans. 
Lac (lactose) operon in a type of bacterial operon, which shows a cluster of genes that are regulated by a single promoter. It is composed of an operator, promoter, a terminator, and three structural genes (lacA, lacY, and lacZ), which are responsible for the transport and breakdown of lactose. 
The lac operon is an inducible operon as it gets activated in the presence of lactose and expressed its functional genes in the form of proteins (or enzymes) for lactose metabolism.  
Thus, the correct answer to be fill in first blank is 'inducible' and in second blank is 'lactose.'
 
        
                    
             
        
        
        
CO2 is returned to the atmosphere by all methods except photosynthesis.
Through photosynthesis, a plant actually takes CO2 from the atmosphere and produces oxygen in return.