Answer:
Primary sources are those sources that are closest to the origin of the information. e.g research
Secondary sources are often just the analysis, interpretation, and synthesis of primary sources . like textbooks, articles,e.t.c.
Explanation:
Answer:
Phycologist in every subfield draw on and contribute to knowledge from other subfields.
Answer:
population , regions , river
Answer:
4
Explanation:because thats how you pernous it