Answer:
Child A is female and Child B is male
Explanation:
The XY sex-determination system is found in humans, most other mammals. In this system, the sex of an individual is determined by a pair of sex chromosomes. Females have two of the same kind of sex chromosome (XX). Males typically have two different kinds of sex chromosomes (XY).
Answer:
Earthquakes along the San Andreas fault zone, for example, are repetitive—they reoccur in roughly the same regions over and over again—separated by decades or centuries because stress continues to build up all the time and when it is great enough to overcome friction there will be an earthquake and then the process will start over again
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The answer to this is D. tanner, a gymnast, is a fanatic about exercise and has lost a lot of weight during the six months since school started. mr. thomas rarely sees him at lunch.