A: Observation
Explanation: Scientist had to measure the worm to get its actual size, therefore they observed the size of the worm
Answer:
are natural world,based on a body of fact that have been repeatedly confirmed through observation and experiment.
Explanation:
the are realiable account for the real world
The mind and body..............
Speciation occurs when a single species becomes two or more separate species, which can no longer interbreed with one another. Reproductive isolation is required for speciation. Reproductive isolation means the groups in question cannot mate with one another, often because of physical barriers.
