Hey there!
If there is a temperature difference between two objects, the object that has a higher temperature will want to level out its heat. Therefore, it will transfer the heat it needs to the other object if it allows until they are the same temperature.
I hope this helps!
Because each parent contributes to their child 23 chromosomes, so therefore each parent gives their child half of the DNA of the child.
It wouldn't be 30% or 70% because the balance of the chromosomes the parents contribute is always equal.
Do you have a word bank? or anything to choose from?