Answer:
The actinide series has most of its valence electrons in the 5f subshell.
Explanation:
Mucus in our noses and respiratory tracts trap microbes and pathogens from entering our body. Wax also trap pathogens and other foreign particles from entering our ears. Non-specific defenses are surface coverage defenses. T-cells target specific pathogens, which is a type of specific defense acted upon by our immune system.
I am fairly sure the answer is B
C
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Answer:
Craig is right and doesn't have to pay child support.
Explanation:
<em>The complete question is</em>
<em>Susan, a mother with Type B blood, has a child with Type O blood. She claims that Craig, who has Type A blood, is the father. He claims that he cannot possibly be the father. Further blood tests ordered by the judge reveal that Craig is AA. The judge rules that:</em>
<em>a. Susan is right and Craig must pay child support</em>
<em>b. Craig is right and doesn't have to pay child support</em>
<em>c. Susan cannot be the real mother of the child; there must have been an error made at the hospital</em>
<em>d. it is impossible to reach a decision based on the limited data available</em>
- The blood type of a child is determined by the blood type of the parents, and the rules are as given in the attached diagram.
- Based on these rules, it can be observed that a person with type O blood group must have the genotype OO and from this, it can be concluded that both the parents must carry an O allele.
- Since the blood typing has revealed that Craig is AA, he can't be the father of the child and hence, he doesn't have to pay child support.