The air puff is the Unconditioned Stimulus
An air puff is "unconditioned" and will naturally require the rabbit to blink
Unconditioned Stimulus - Air Puff
Unconditioned Response - Blinking due to Air Puff
Conditioned Stimulus - Light
Conditioned Response - Blinking due to Light because it is paired with Air Puff
Answer:
The most abundant type of pollution in national parks at that time was air pollution and it had begun to reduce biodiversity as organisms were leaving polluted areas for cleaner ones, or they simply were not able to survive.
Speed and precision have been one of the main differences between an older and a more modern genetically modified food. In addition, these genetically modified organisms have yielded crop efficiencies although it also involves in various debates because of its unethical nature.
Answer:
Radiation leads to mutations that causes genetic drift and decrease fitness.
Explanation:
Radiation is responsible for changing or altering the DNA sequence within a cell.
Radiation either causes mutation or it leads to cell death.
Most of the ionizing radiation causes mutation within the deep inside of our cells which eventually leads genetic drift which means change in the frequency of the allele in a population over time.
Beneficial mutation confer advantage to the organism. But in this case, the mutation is not beneficial and decreases the fitness of the rodent organisms.
The correct answers are evolution, genetic mutation and selection.
The early ancestors of horses showed the pressence of digits and now the modern horses have hooves in their limbs. There could be many reasons for the pressence of hooves horses.
These could be due to the genetic mutations, which could have changed the shape of the digits in the limb. Sudden change in DNA can cause mutation and this mutation can change the phenotype of the horse.
There are chances that evolution took place over a period of time that changed the character in the horse.
Natural selection can also be one of the reason for the change in the phenotype of the digits on the limb of the horses.