Answer:
the signals have different frequency
Explanation:
The way that interference is avoided in these cases is that the signals have different frequency. Cell phone signals travel in a very specific wavelength, how often this wave repeats in a given span is called the frequency. By having these signals in different frequencies it prevents the signals from mixing with each other and instead allowing them to reach their destination intact. Otherwise, the signals would combine into a mess of uncomprehensible data, which is what we call interference.
 
        
             
        
        
        
Answer:
Biotic factors of tundra ecosystem: migratory bird species and mammals such as caribou, foxes, bears, and small rodents. 
Explanation:
Biotic component of an ecosystem are the total of all the species of living beings present in the system. It includes species of plant, animals and microbes. Since tundra ecosystem is habitat for migratory bird species and mammals such as caribou, foxes, bears, and small rodents; these living beings serve as biotic component for the system. 
 
        
                    
             
        
        
        
Gametes have a single copy of an allele for each gene while zygotes have two copies for each gene.
 
        
             
        
        
        
Answer:
The correct order of the steps of light dependent reaction is described below
Explanation:
Step 1 light energy is absorbed and transferred to the reaction center
Step 2 water molecule is splited
Step 3  Electrons are transferred from photosystem 2 to photosystem 1 
Step 4  ATP is synthesized from ADP and inorganic phosphate.
 
        
             
        
        
        
Answer:
D
Explanation:
I took the test and got it correct