It's phase contrast microscopy
Because you need to contrast to see the specimen
Answer:
Secondary Succession
Explanation:
Secondary Succession is faster than primary succession because soil is already there, and the soil usually contains many nutrients.
Examples: Secondary succession occurs when the severity of disturbance is insufficient to remove all the existing vegetation and soil from a site. Many different kinds of disturbances, such as fire, flooding, windstorms, and human activities (e.g., logging of forests) can initiate secondary succession.
The deficiency of vitamin B12 is a very rare case that would give rise to many conditions such as muscle cramps, difficulty walking, and numbness. This vitamin is crucial to the body and is also sometimes referred to as cobalamin.
Evolution. allele frequencies change so characteristics change and if this is over time it is evolution- "the change over time of allele frequencies"
