A facultative anaerobe.
Explanation:
Anaerobes are organisms which can produce energy via the process of fermentation in the absence of oxygen. The anaerobes can be classified as facultative anaerobes and obligate anaerobes. 
Facultative anaerobes are those which can carry out respiration in presence of oxygen but can choose to follow the fermentation pathway if oxygen is absent. Fermentation also uses glucose. 
Aerobic respiration produces 32 molecules of ATP from one  molecules of glucose while fermentation produces only 2 molecules of ATP . Thus when the organism switches to fermentation pathway it utilizes more and more glucose to reach its energy demands.
 Considering all the above points we can conclude that observations indicate that the organism is a facultative anaerobe.
 
        
             
        
        
        
Mendel observed phenotypic traits during the cross of pea plants. Subsequently, he noted each trait had only two forms. 
<h3>Mendel's Experiments</h3>
Mendel crossed pure-breeding pea plants, and then he crossed hybrid generations, as well crossed the hybrid progeny back to parental lines.
From these crosses, Mendel observed the descendence and then formulated a series of inheritance principles.
Mendel noted traits can be divided into dominant and recessive phenotypic characteristics. 
Dominant characteristics were inherited in an unaltered manner after hybridization of true breeding [plants.
Learn more about Mendel's experiments here:
brainly.com/question/9546178
 
        
             
        
        
        
Answer:
hardness and luster
Minerals are classified by many different things - but the two speical and primary propertied that identify them are hardness and luster.
Hope it helps!
 
        
                    
             
        
        
        
Answer:
The variation might occur in the population that leads to the evolution of the species. This variation may occur due to natural selection, mutation or recombination.
The variation might change the genotype and allelic frequency of the population and might also change the phenotype of the individual in the population. The breeding adults of the left mouthed in 1981, 1987 and 1990 shows variation and was equally opposite phenotype which is more common in the population. 
 
        
             
        
        
        
Answer:
 The respiratory system's main job is to move fresh air into your body while also removing waste gases.
Explanation:
Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe.