Answer:
d. All of the above
Explanation:
A biome is a collection of plants and animals that have common characteristics for the environment they exist in. They can be found over a range of continents. Biomes are distinct biological communities that have formed in response to a shared physical climate.
I want to say A . Hope this helps :)
The correct answer is the plow. When the plow was invented agriculture was made much easier which enabled people to settle around and make surplus of food. This enabled them to trade with others and increase the size of the cities and the rest is history.
A negative self concept
Carl Rogers believed that when a person falls short of their ideal self they begin to think badly of themselves. This causes them to experience a negative self concept. The person would have low self-esteem and have an overall negative idea and opinion of them self.