Because of cultural reasons
Answer:
I would say D.) at least or A.)
Explanation:
keep on studying for it, look online or at your library in school, take notes in class if you want to. hope this helps,:)
Please submit the rest of the question please :)
The Amazon River system is the single, largest source of freshwater on Earth and its flow regime is subject to interannual and long-term climate variability, which translate into large variations in downstream discharge (Richey et al., 1989; Marengo and Nobre, 2001; Marengo 2004, 2005, 2006, 2007; Milly et al., 2005, Marengo et al., 2008a, b; Cox et al., 2008; Zeng et al., 2008). To predict future climate (rainfall) change and consequent river variability an understanding of the physical mechanisms related to regional and large-scale atmospheric–oceanic–biospheric forcings is required.
sorry copied from Go ogle
but
hope it is helpful to you ☺️☺️☺️
