I think it is stitches for the first one and the secend is padding I think
Where are the questions cuz I don’t seem them either
The Ph scale measures the acidity or alkalinity of water soluble substances (pHstands for 'potential of Hydrogen'). A pH value is a number from 1 to 14, with 7 as the middle (neutral) point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.
The way Punnett squares can be solved is by cross-matching