Answer:
The environmental factor that could lead to a decrease in genetic variation in a tuna population is an increase in pollution (second option).
Explanation:
There is a correlation between genetic variability and environmental pollution, the latter being a factor that impacts negatively on the variability of a specific population.
The concept of pollution stress not only implies a low rate of reproduction, but it is also a factor that prevents genetic exchange with other populations, which is a factor that makes the genetic variability decrease in a population.
For these reasons an increase in pollution implies a decrease in genetic variability in a tuna population.
- <em>Other options, such as </em><u><em>an increase in food availability</em></u><em>, a</em><u><em> decrease in tuna fishing
</em></u><em> or </em><u><em>a decrease in tuna predators</em></u><em>, are environmental factors that contribute to increased genetic variability.</em>
1) 50%
2) 50%
...........hope it helps!
Kākahi have a unique life cycle that relies on fish to be successful. Briefly, males release their sperm into the water in spring where it is taken in by the females to fertilise their eggs which are held inside a special brood pouch in the gill.
This one was shown in the documentary, Cosmos, a good example of selective breeding is with wolves into dogs, only breeding the ones that dont bite the feeding hand and what are the nicest. an example of natural selection is brown bears in the artic, thier offspring needs to adapt to the climate and how they survive, polar bears are white because its harder for prey to see them in the snow
Answer B; fungi are decomposers. They break down dead material.
