The respiratory system always needs iron. The red blood cells are in charge of the transport of O2. They need iron to do this.
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Explanation:
an allele is an alternative form of a particular gene whereas a trait is the character that is determined by the allele.
Answer:
Options 2, 3 and 4
Explanation:
Options 2, 3 & 4 are also mentioned at tge end of the cycle; hence it means that a star can become a supernova, black hole or a neutron star at the end of its evolution.
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Answer:
Meiosis
Explanation:
Because it forms 4 daughter cells which are haploid (half the amount of chromosomes as parent cell )
