If possible I'd say all of them except the fourth one down (parts of ecosystems are independant) but if not I'd say the most valid one is the second one down (healthy ecosystems help animals)
South America is west of Africa
Answer:
World War I began in June of 1914, and is considered to have five major causes that led to the outbreak of the war. These five causes include the four long-term causes (militarism, alliances, imperialism and nationalism) discussed in this reading and one short-term cause (the assassination of Franz Ferdinand).
Explanation:
Answer: I can't really read your question.
Explanation:
