Answer : Hydrogen.......:
        
             
        
        
        
Organism in an eniornment can compte for food
        
             
        
        
        
Anaphylaxis, also called allergic or anaphylactic shock, is a sudden, severe and life-threatening allergic reaction that involves the whole body. The reaction is marked by constriction of the airways, leading to difficulty breathing. 
Anaphylaxis is a severe, whole-body allergic reaction to a chemical that has become an allergen. An allergen is a substance that can cause an allergic reaction. 
Anaphylactic shock is a rare but severe allergic reaction that can be deadly if you don't treat it right away. It's most often caused by an allergy to food, insect bites, or certain medications. A shot of a drug called epinephrine is needed immediately.
To learn more about anaphylactic shock here
brainly.com/question/14485888
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Answer:
D
Explanation:
Co-dominance is when both alleles combine to form an intermediate phenotype. It's like crossing a red and white flower and getting a pink flower.