Answer:
nucleus and we need dna so we can figure out people in our past
Explanation:
 
        
             
        
        
        
The dimensions of the room is not given. Lets assume a value and calculate BTU accordingly.
Answer and Explanation:
BTU, or British Thermal Unit, is defined as the amount of heat required to raise the temperature of 1 pound of water by 1° F. 
In other words,BTU's measures the amount of heat an AC (or any other cooling unit) can remove from a room per hour. Higher the BTU, the more powerful the cooling.
Calculation:
Lets assume that a room is 10 feet wide and 14 feet long.
Calculate the size of the room by multiplying the height of the room with its width:
size of the room= 10 × 14
                           = 140 square feet
Then multiply the size of the room that you obtained in step 1 with 20 BTU per square foot, in order to get the minimum BTU's required for AC to cool a room,
140 × 20= 2800
  2800 BTU cooling capacity is required.
 
        
                    
             
        
        
        
The answer to this is nutritional status.
The balance between nutrient intake and nutrient requirements is described as <u>nutritional status.</u> 
I hope I helped!!!
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Prokaryotes are organisms made up of cells that lack a cell nucleus or any membrane-encased organelles. Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus that holds genetic material as well as membrane-bound organelles.
        
                    
             
        
        
        
Answer
          About 10% energy is converted to biomass from one trophic level to another trophic level.
Explanation
         Food chain is composed of different trophic level which are classified on the basis of their mood of food obtain. These include  
1. Producers (photosynthetic)
2. Primary consumers (herbivore)
3. secondary consumer (Carnivore)
4. Tertiary consumer (carnivore)
5.Quaternary consumer (Carnivore)
6. Decomposer  
                      As larvae are hatched by insects which belong to second trophic level.  About 90% of energy in food is lost at each trophic level. As move down the trophic level the number of organism also decreases in each trophic level. Therefore, energy transfer from one trophic level to another is like a pyramid.