Ethnicity is a term that can be categorized by race, nationality, religion etc... All those things can determine ethnicity.
Ninety percent this answer is too short so I am just typing this
The correct answer is - In Cuba, the government control of the economy has began to loosen. In North Korea, the government maintains a tight hold over the economy.
In recent years, after Fidel Castro stepped aside as president of Cuba, the Cuban economy has slowly but surely started to open up to the world, and that is mainly because the government started to allow it bit by bit.
In North Korea, there isn't any change in the economic policies. The government is in control over all of it, and dictates it as it pleases and needs, and there's not even a slight hope for the time being that things will change.
The expansion of grasses led to the radiation of herbivores such as grazing mammals.
Explanation:
The grasses, unlike the popular belief, have not really existed on Earth for a long time. They are actually relatively new on the scene, only appearing around 25 million years ago, initially in South America. Since the grasses first appeared, they have been able to spread around the world very easily. The reasons for the expansion of the grasslands have been:
- dry climate
- small requirements for survival
- easy and fast growth
- fast reproduction
The grasslands influenced the animals and their evolution. They were new places, free for exploitation, and offered lot of nutrition. The herbivores, mainly the mammalian ones, started to adapt to the new environment, leading to rapid diversification and rise in their numbers. Some of the animals that have been the result of adaptation to the grasslands are:
- camels
- horses
- tapirs
- rhinoceroses
- elephants
Learn more about dry and tropical climate brainly.com/question/11034575
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