B-Kidneys
The kidneys act as filters that strain urea and excess salts from the bloodstream to release them in the urine.
Think of when pangea was a thing, when the continents were "all together". They moved apart, obviously, and they can fit like puzzle pieces. If that makes sense? Because they were once all together.
Answer: Stratified
Explanation:
The stratified sampling can be defined as the sampling from the population which is partitioned or divided into many parts.
Here, the lady has divided her day into three parts morning, afternoon and evening.
This is a way which is used to take sample randomly from the population. therefore, Keri took 4 random sample from each part of the day.
This is a type of stratified sampling.
It’s very confusing sorry for that
