There is really nothing to know. All you have to use is context clues and common sense. We know some synonyms for direct are manage and handle. Indirect means not direct, right? And we can't handle or manage earth's interior (core), right? Therefore, the study of earth's interior is an example of indirect observation because we cannot directly manage it.
What are you asking, for the def??
Answer:
Some of the goods that are native to the Americas but were introduced in Europe are tobacco, tomatoes, potatoes, corn, Jerusalem artichokes...
Explanation:
The Americas were two continents that were not in touch with the rest of the world. This led to a situation where these two continents had an abundance of goods that were not known to people living outside of them. When the Europeans reached the Americas, among other things, they encountered a lot of these goods and immediately saw their potential.
Through the Columbian exchange, goods like tobacco, tomatoes, potatoes, corn, Jerusalem artichokes, all found their way toward Europe. Tobacco soon became the most used recreational plant The tomatoes, potatoes, and corn became integral parts of the European diet and helped massively in the elemination of famine. The Jerusalem artichoke was used by both humans and animals, as it was very easy to grow and highly productive.
Answer: economic
Explanation: when do u want me to do your blood bag transfusion while your sleep ?
Match each eon or era with the appropriate characteristic or event.
The eon
a. Archean eon b. Mesozoic era c. Phanerozoic eon d. Proterozoic eon e.Hadean eon f. Cenozoic era g. Paleozoic era
1. Largest mass extinction in Earth's history : g. Paleozoic era
2. Toxic atmosphere; first bacteria : a. Archean eon
3. Sometimes called "Age of Mammals" : f. Cenozoic era
4. Buildup of oxygen; first eukaryotes : d. Proterozoic eon
5. Current eon : c. Phanerozoic eon
6. Time of the dinosaurs: b. Mesozoic era
7. Formation of the solar system: e. Hadean eon
