The plants must have variation in the amount of waxy coating.
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.
The ring of fire is a circle that is covered with volcanos in its circumference. it erupts more that any other place because the more volcanos their are, the more these events will happen. another reason would be the tectonic plates. volcanos usually form on top of them. you must prepare for these events for your safety. their could be an earthquake any time, no mater where you are.
Sea water is salty, too salty for consumption. Our kidneys cannot properly process that much salt. The salt will dry our bodies out resulting in dehydration.