Answer:
4.26
Explanation:
Let the green-melon parents be Gg, then we expect the cross with the yellow-melon plant gg so as to produce 50% Gg and other 50% of gg offspring. What we observed was that 53 green and a 41 yellow. Based on the total number of 94 offspring , we expected half and a half ratios to be 47 of each color.
Observed(o) Expected(e) (o-e)

Green-melon plant 53 47 6 36 0.766
Yellow-melon plant 41 47 -6 36 0.766
Therefore the chi-square value is 1.53 which is less than the critical value of 3.84. Therefore, the null hypothesis is accepted.
From Pollution you know smokes
Blood cells are produced in the bone marrow and the bone marrow is part of the skeletal system. So the answer would be skeletal system<em>. </em>
Renin enzyme
Renin enzyme are also known as angiotensinogenase and
function by regulating the body means arterial blood pressure. They do circulate
in the blood stream and digest angiotensinogen that was secreted in the liver
into peptide angiotensin 1. Thus, they are secreted by the kidney and placenta.