Answer: in biology an interacting group of various species in a common location is called. COMMUNITY 
 
        
             
        
        
        
Answer:
It is Isotonic to the fish egg solution
Explanation:
It is Isotonic because Isotonic is a solution that has the same solute concentration with another solution I.e the amount of solute in one solution is the same with the other. This slow the free flow of solutes in equal part through the semipermeable membrane from one solution to the other.
 
        
             
        
        
        
The statement that is a well-written hypothesis about DDT and its effects on the environment is as follows: If DDT levels in the environment increase, then the number of predatory birds will decrease (option B). 
<h3>What is an hypothesis?</h3>
Hypothesis is a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation or experimentation.
Hypothesis is widely regarded as an educated guess because it predicts the outcome of an experiment and can be tested to either be true or false. 
A hypothesis is usually written as an IF, THEN statement. 
Therefore, the statement that is a well-written hypothesis about DDT and its effects on the environment is as follows: If DDT levels in the environment increase, then the number of predatory birds will decrease. 
Learn more about hypothesis at: brainly.com/question/13025783
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Answer:
it is a cell.
Explanation:
the cell is the structural and functional unit of all living organisms
 
        
             
        
        
        
Origin of species by means of natural selection