Answer:
y chromosome is responsible to determined the sex of the child
x chromosome don't determined the Sex of the child
Answer:
After he has adjusted to his exercise routine he should increase the intensity of the workout. Ex. add weight/ increase reps. This will help get his heart rate higher.
Explanation:
The answer is tympanostomy
It will make you tired and tou will just want to sleep ( i know this from exsperiience)
They go on the first level of the pyramid!! Hope that this helped
