That's true. There is little variety among organisms found in pools, pounds and lakes. Despite that fact that many ponds are seasonal, lasting just a couple of month (for exemple sessile pools) while lakes can exist for more than hundred years. Lakes and ponds have limited species diversity because they are often limited from each other and from other water sources like rivers, seas and oceans.
The vertebrae protects the spinal cord
Answer: (Smallest = left) (Largest = right)
Individual = community = population = biome = biosphere = ecosystem
Well to I don't know what you mean by in the following cases but, a dependent variable is the variable being tested and measured and also relies on the independent. While on the other hand the independent variable is the variable that is being changed or controlled.
