Technically, they can but you don't have to be related because you can have things in common with another person with are personality traits , and if they have different skin colors it doesn't matter , and you can still have many traits in common , because my sister is darker than me a lot but we still share same traits.
Is this a bunch of typos or did you put this question in a different language?
Answer:
The capillaries
Explanation:
This is where the exchange of gases , nutrients and waste occurs between the tissues and the blood due to the small pores and spaces are between the cells
Answer:
thermal energy to heat our homes; mechanical energy to transport people and things; and electrical energy to power just about every other technology we use.
Explanation:
True. if thats what you're looking for