Answer:
sea trade
Explanation:
The control of sea trade, the chief source of Portuguese wealth in the East, was assured by the defeat of Muslim naval forces off Diu in 1509.
Portugal's main natural resources include fish, forests (cork), iron ore, copper, zinc, tin, tungsten, silver, gold, uranium, marble, clay, gypsum, salt, arable land and hydropower.
Answer:
B. establish communes and promote labor-intensive agriculture
Answer:
I know the answer with is radio waves, but I'm not sure what out of your selection it could be ill add some things I know from my class in the explanation that hopefully help you or another brainly wiss!
Explanation:
Are radio waves completely different physical objects than gamma-rays? They are produced in different processes and are detected in different ways, but they are not fundamentally different. Radio waves, gamma-rays, visible light, and all the other parts of the electromagnetic spectrum are electromagnetic radiation. Electromagnetic radiation can be described in terms of a stream of mass-less particles, called photons, each traveling at light speed.
Humans affect the physical environment in numerous ways: overpopulation, contamination, burning fossil powers, and deforestation. Changes like these have triggered climate alter, soil erosion, poor air quality, and undrinkable water. These negative impacts can influence human behavior and can provoke mass migrations or battles over clean water.
Chilean central valley, and the Andes.
