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>
I would say photosynthetic bacteria are the most important, because if they disappeared most of the oxygen in the atmosphere wouldnt be here and complex life like humans wouldnt exist
Answer:
The bee travelled a total distance of 11.7 metres, in order to collect pollen from a flower and then back to its hive.
Note: The question is not clearly stated. A similar but clearly stated question is given below:
A bee flew 840 cm and landed on a flower to collect some pollen. Then the bee flew another 330 cm to get back to her hive. How many meters did the bee travel?
Explanation:
Th distance travelled by the bee is the sum total of all the ground covered by the bee.
The initial distance travelled by the bee to get to the flower = 840 cm
After collecting pollen from the flower, the distance travelled by the bee to get to its hive = 330 cm
The total distance travelled by the bee = 840 cm + 330 cm = 1170 cm
The distance covered in centimetres is then covered to metres
100 centimetres = 1 metre
Therefore, 1170 cm = 1170 cm × 1 m /100 cm = 11.7 m
Therefore, the bee travelled a total distance of 11.7 metres, in order to collect pollen from a flower and then back to its hive.
Answer:
Due to change in genetic combination.
Explanation:
The results change as the number of trials increased because variation occur in the genetic combinations of chickens. It is important to breed the chickens repeatedly in this experiment in order to gain accuracy and attain best results. If the chicken is breed repeatedly, at the beginning changes occur in their offspring due to change in their genetic makeup so for accurate results repetition is necessary.
A is the answer
because
C and G binds together
A and T binds together
AND so on....
