The epipelagic zone<span> of the ocean is most hospitable to life.</span>
        
                    
             
        
        
        
Answer:
antibiotics
Explanation:
pesticides have to do with nature and killing bugs, weeds, etc. Irrigation has to do with watering plants and people. Trucks are vehicles that transport. Antiobiotics help kill bad bacteria in your body when your sick, so that's health related. 
 
        
             
        
        
        
Answer:
<em>Backyard bird feeding is a well known </em><em>type of human–untamed life </em><em>communication in specific regions of the northern and southern side of the equator.</em>
Explanation:
 In territories where sustaining is mainstream in the Southern Hemisphere, supplemental encouraging may excessively profit acquainted winged creature species while driving with decreases of local species, possibly due to hetero specific competition. 
However, Backyard bird feeders can bring about constructive outcomes on some feathered creature species, for example, improved overwinter endurance, expanded populace sizes and geographic range extension.
 
        
             
        
        
        
Answer:
oxygen gas
Explanation:
because oxygen is needed for life on Earth 
 
        
                    
             
        
        
        
Biologist
study life to the extent to which they can uncover, unearth and investigate unseen,
latent and concealed life forms that are still many in number, these crawling
and under the water creatures. And in experimental sense, many biologists are
guided by the ethics in researching life forms. This is to protect and inhibit
other biologist in killing thousands of these living organisms and prevent them
from becoming extinct. Remember that biologists or any other scientists study
because of knowledge and to contribute to the scientific world of making the
ecosystem including us into a much better and cultured place and not the
opposite. 
Hence, there are non-experimental and experimental approaches which
are all subject to ethics. In exploring life forms, it is quite unlimited but
studying life forms in experimental sense, it is somehow depends on the number
of species that the biologists’ study.