1. False- a species would know what is their kind and what is not
2. True- if the parents have the trait it is most likely the offspring will have it also
3. False- they can’t change their beak type. They just adapt in their current environment 
4. False- natural selection is when a breed is naturally selected to have certain traits in that specific area
(Sorry if it’s wrong hope this helped :) )
        
             
        
        
        
A germ-line mutation in one of the genes implicated in the cancer occurred in an ancestor.
        
             
        
        
        
My theory is that . Mybe it changed because the flavor composition of the cracker changed or it dissolved in the saliva.
THEORY. :'3
        
                    
             
        
        
        
Answer:
Because oxygen is circulated throughout the body via the bloodstream, there is a strong connection between the cardiovascular system and the <em><u>respiratory</u></em> system.
Explanation:
The cardiovascular system is responsible for the transport of oxygen to all tissues of the body, in addition to the removal of carbon dioxide, which depends on the close interaction with the respiratory system.
A summary of the strong connection between the cardiovascular and respiratory systems is
:
Blood contains red blood cells, which are responsible for transporting O₂ and CO₂ by binding to the hemoglobin molecule, present in these structures. The respiratory system is responsible for providing air with O₂ and removing CO₂, a process that depends on gas exchange at the level of the pulmonary alveolus.