One of the common arguments why the process of transplanting non-human organs which came from animals may be considered as an ethical act is that antigens on the surface of the non-human organs are not significantly rejected in the process. Although its research is still substantial, it is still considered as a matter of ethical issue.
an increase in the spider and insect population
Sunlight and nutrient
availability are the factors influencing photosynthetic productivity. Plants,
fungi, and algae obtain the energy they need to live from photosynthesis. The
amount of sunlight and the amount of other nutrients (especially nitrogen, phosphorous
and iron) available influence the productivity of organisms through
photosynthesis.
