Answer:
Girls have menstrual cycles because girls have changes of hormones in their body. The hormones make the lining of the uterus build up. This gets the uterus ready for an egg which when the egg is released it causes a period also known as a menstrual cycle which happens normally every month for at least 3-7 days.
Explanation:
Answer:
Testable prediction that gives direction to research.
Explanation:
A hypothesis is an explanation that can be accepted in a provisional way, but has the objective to provide sufficient guidance for further investigation.
It is also considered testable because it can be proven right or wrong, it means it is possible to be verified.
Answer:When someone becomes depressed in certain seasons (typically happens in the winter months). However, It can happen based on events that take place during those months or simply just the weather.
Explanation:
Answer:
The hospitality industry commonly use a range of chemical products, for example, all-purpose cleaner, ammonia-based cleaner, bleach, metal polish, dishwashing cleaner, disinfectant, drain cleaner, glass cleaner, oven cleaner, scouring powder, deodorant and fuel.
Explanation:
