Scientific methods must be supported by observations and results from many investigations and are not absolute.
Punnet square
Let's call black 'B' and white 'b'
Being intermediate, gray cats will have the alleles 'Bb'
Being recessive, white cats will have the alleles 'bb'
<u> Gray </u>
|<u> </u>|<u> B | b |</u>
White |b|<u> Bb | bb|</u>
|b|<u> Bb | bb|
</u>
^Apologies for the awful drawing XD
Bb = Gray
bb = White
So the cats can have gray or white fur (A)
The right answer is C. thermoregulation and hormone transport.
The cardiovascular system has the function of distributing the blood to the organs.
Blood is a red and slightly viscous liquid that circulates in the blood vessels, propelled by the heart, is essential to the maintenance of life. It transports nutrients, oxygen and hormones to the cells of the body, and rids them of their waste.
Blood circulation helps control body temperature and regulates the volume of certain liquids in the tissues. In addition, the blood carries white blood cells, which defend our body against germs.
The answer is: A
Chemical energy
