Question

SOLVE :
- 7/- 10 ÷ -21/5​

Answer 1

Explanation:

$\frac{ -7}{10}$

Tapwater and pure water are hypotonic. A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst. This is why putting water on a bloodstained piece of clothing makes the stain worse.