The earliest archaeological evidence of humans in Australia is from Lake Mungo , dating to 40,000 years ago.
        
             
        
        
        
The amount of co2 in the atmosphere would increase
hope this helps
        
                    
             
        
        
        
<span>A. abiotic component</span>
An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system.   
        
                    
             
        
        
        
The drug that is associated when having to intake it when
pregnant that is likely causing premature birth, low birth weight infants and
the fetal death is the use of nicotine. This type of drug is a form of agonist
in regards with nicotinic acetylcholone receptors.