The correct answer is "limited prey is driving the bears to seek food in human settlements".
Due to the warming of the Arctic waters, the ice is melting, resulting in a serious decline of floating winter ice. Polar bears need these floating parts of ice to hunt, therefore this new situation limits the hunting opportunities of the bears. That is why polar bears are driven to human settlements to look for food.
Answer:
The proportion of a genotype (i.e., AB) in a population.
Explanation:
- Every trait is controlled by some alleles and their combinations. Allele frequency determines the frequency of occurrence of a particular allele in a population.
- It can be determined by genotype frequency or proportion of a particular genotype in a population. As a genotype is a result of various alleles coming together, its frequency can help us to calculate the allele frequency.
- For example, in a population with two alleles A and B, A allele can either occur as AA or as AB. To calculate the frequency of A we will have to calculate the genotype frequencies of AA and AB.
Living things in the Biosphere.
