Which of following best defines a community

a. all plants
b. all animals
c. all abiotic factors
d. all biotic factors

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

How can an organ, such as the lungs, work for multiple body systems?

Eutrophication caused by human nutrient pollution.