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.
This atom placed in 14th group of the periodic table has a relatively small mass and can form four different bonds according to it's valence. That's what allows it to form a large variety of compounds.
Answer: The correct answer is B. He could add insulation to the aquarium so that it does not exchange energy with its surroundings.
Explanation-
Isolated system is a system in which there is no exchange of energy and mass. As per the question, heat is radiated from the aquarium. In order to make it an isolated system, insulating or diathermic cover is used over it so that it does not exchange energy with its surroundings.
Resources are depleted population growth rate slows and eventually stop this is known as the logistic growth the population size at which growth stops is generally called the carrying capacity which is the number of individuals of a particular population that that environment can support.
Answer: C. scorpions have changed as a result of natural selection
Explanation:
The text tells us that scorpions today are now smaller than they were in the past. This means that the scorpions have changed since then i.e. they have evolved.
The primary reason for evolution is natural selection which refers to a situation whereby only the organisms that are better adapted in their species survive.
The conclusion that can be drawn from this research therefore is that we have smaller scorpions today because they stood a better chance of survival than the larger ones and so survived whilst the larger ones died out.