- 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: The fat has a lower density than the other parts of the milk.
Explanation:
Milk is a dairy product which is produced by the mammary gland of mammals such as cow, goat, pigs and even human beings used for the nourishment of their younger ones. Milk gotten for cow is usually processed and consumed by man. It's constituents includes the following:
-> water,
-> lactose
-> fat
-> protein and
-> minerals.
The fat component of milk can be separated by simply allowing the fresh milk to stand for a period of time and the top layer of fat removed. This is possible because fat has a lower density than the other parts of the milk. In the dairy processing, when fresh milk is allowed to stand for a period of time, the fat globules would begin to rise to the surface in a phenomena called creaming.
The cell membrane lets substances come in and out of the cell. This is found in plant and animal cells. The cell wall acts like a barrier or a wall for the cell, and this is only found in a plant cell. The nucleus is basically the 'brain' of the cell. This is found in both plant and animal cells. It is only found in eukaryotes. The cytoplasm is a gel-like fluid that fills up the cell.
The name is Iron (II) Chloride
Hello!
The source of energy that is normally used for short burts of activity is called Glycogen.
Glycogen is mainly found in liver cells and muscles.
I really hope you found this helpful! :)
