Animals store most of their excess energy reserves as fat within the body. Whenever carbohydrates are not available, this stored fat provides the required energy. Fat is a very important part of the diet as it helps to maintain the body temperature. Fats also help to absorb certain vitamins like A, D, E and K.These vitamins are highly essential for our body and is present in our daily diet that we eat. These vitamins are also called fat soluble vitamins. It should also be kept in mind that there are good fats as well as bad fats. The increase in the amount of bad fats can be fatal and can be a reason for heart attack.
- The environment needs to change in order to natural selection to occur.
Reason:
Because, Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
2. Population has some genetic variations.
Reason:
Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by:
mutation and random mating between organisms
3. Nature select organism with specific traits to survive and reproduce.
Reason:
According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.
Answer:
Adults will live only a day or so, but the aquatic larvae lives for about a year
Explanation:
