White blood cells and also called leukocytes, are a key part of the body's immune system, which is the body’s defense system against infection.
C. negative proteins inside the cell
There are some reasons which could be mentioned:
1)Energy is lost as heat at each feeding level
2)Consumers who feed directly on plants have more energy for themselves than consumers feeding on other consumers. Indeed, energy again is lost in each level.
3)Feeding cattle is not productive, because energy must be transferred from plants to the cattle and then to people.
Answer:
Four
Explanation:
Like all proteins, the "blueprint" for hemoglobin exists in DNA.
