Try reading the book, I know that will have ALL of the answers you will need to be successful.
Answer: Bottleneck effect
Explanation:
The bottleneck effect is terms of population size is one of the concept in which there is large reduction in the population size due to the various types of environment related factors and also due to the human activities are as follows:
- Floods
- Droughts
- Fires
- Earthquakes
- Planning of the human population
According to the given question, Bottleneck effect is one of the congestion point in which the large number of species or we can say that population is killed and it also increase the genetic drift. So, the above given situation is illustrating the concept of bottleneck effect.
Therefore, Bottleneck effect is the correct answer.
Calorie is a unit of energy.
Specifically, it is defined as the energy that is needed to raise the temperature by one degree Kalvin (or Celcius, which is the same) of one gram of water in an earth's atmosphere.
C I believe is the answer