C. Helpful variations accumulate among surviving members of a species
Choice A is the correct choice, The graduation rate in a city and the rate of unemployment in that same city would not have a positive correlation.
Answer:
False
Explanation:
Prophase is the first phase of mitosis, the chromosomes are visible in this stage. The chromosomes are distinct but they are not shortened.
The definition of a biome is the community of many ecosystems in one general area. Many ecosystems can exist in a biome because a biome could have a water ecosystem and a dirt ecosystem.
