I believe it is amino acids?
Answer:
Competition will occur between organisms in an ecosystem when their niches overlap, they both try to use the same resource and the resource is in short supply. Animals compete for food, water and space to live. Plants compete for light, water, minerals and root space.
Answer:
Land Insecurity
Very Poor Living Conditions
Unemployment
Crime.
To name a few
Your outer skin is your epidermis, so just look at your arm