The white blood cells attack the infection
Explanation:
The first living organisms.
Amniotic eggs enabled the uncoupling of reproduction and the need for an aquatic habitat.
Amniotic eggs are An air-breathing egg characterized by a shell and extraembryonic membranes. These enclosed the amniote embryo in a private pond during its development and mediated gas-exchange with the external environment.
Advantages of Amniotic eggs are they develop more quickly and to a greater extent prior to hatching. It is free from animal dependency and reproduce on bodies of water at larval stage .The shell of the Amniotic egg provides protection for the developing embryo and allows water retention while still being permeable to gas exchange.
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A balanced diet should cover the needs. Iron is mainly present in meat.
Iron needs vary according to sex, age, and physiological status. The recommended dietary intakes are 9 mg per day for men and women breastfeeding and menopausal, 16 mg for women and 25 mg for pregnant women.
Peter had 10.8mg of iron, so yes it is enough for his needs.
