If an organism has high biological fitness in one environment, does that mean it would also have high biological fitness in another environment? Why or why not

No

Explanation:

Biological or Darwinian fitness is defined as the ability of an organism to survive in a given habitat against all odds to until it finds a mate and produces viable offspring

The higher the number of offspring produced by an organism, the higher is its biological fitness.

An organism's fitness is supported by different traits or alleles that increase the gene pool in one habitat. If this organism is introduced in a new habitat, there are high chances that the environmental factors and eco food chains will reduce its gene pool and hence the ability to survive. This ultimately reduces its biological fitness.