A population is . A. all organisms in an area that belong to the same species
B. an individual living thing
C. all of the different species living together in an area
D. all of the biotic and abiotic non-living factors in an area

Which of the following best describes homeostasis? a. keeping the internal environment in a stable state b. keeping the external environment in a stable state c. beneficial characteristics resulting from mutation d. reproduction that results in offspring identical to the parent.

*will mark brainliest* certain species of are now recognized as indicators of environmental pollution. a. lichen b. mushroom c. yeast d. none of the above

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.