Drinking water shortages? Water across the world isn't purified which without purification doesn't quench thirst.
The Type O blood group is commonly called as universal donor because any blood group can receive the O blood group. The blood group O has no antigen. Due to the absence of antigen it doesn't agglutinate when come in contact with other blood groups in the plasma.
The agglutination reaction happens when opposite antigen and antibody reacts with each other. e.g.- Blood group A contains antigen A and antibody b and the blood group B contains antigen B and antibody a. Agglutination reaction occurs when the antigen A reacts with antibody a. As O blood group has no antigen, agglutination reaction doesn't occur.
The location northward the Polaris climbs higher in the sky.
Answer:

Explanation:
<u>Given that:</u>
ΔMNO ≅ ΔPQR
That means
M ↔ P
N ↔ Q
O ↔ R
So,
∠P ≅ ∠M
Given that P = 3x + 20.4 and M = 5x - 19
3x + 20.4 = 5x - 19
Add 19 to both sides
3x + 20.4 + 19 = 5x
3x + 39.4 = 5x
Subtract 3x to both sides
39.4 = 5x - 3x
39.4 = 2x
2x = 39.4
Divide both sides by 2
x = 19.7
<u>Given that:</u>
P = 3x + 20.4
P = 3(19.7) + 20.4 (x = 19.7)
P = 59.1 + 20.4
P = 79.5°
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Hope this helped!
<h3>~AH1807</h3>
The chance that a human child will be born male is 50%