Calcium provides strength as a element, though it is present as calcium chloride on the exoskeletons.
Answer:
C. Hypothesis
Explanation:
Hypothesis is a proposed explanation for a certain occurrence and when the explanation is conclusive, then it becomes a theory.
A. The onset of the menstrual flow
Answer:
People who acquire advantageous features have a greater chance of surviving, whereas individuals who have less useful traits are weeded out by natural selection. The higher the diversity of characteristics in a population, the greater the population's chances of survival.
1. A trait is an element of personality that is relatively stable throughout the lifespan and across contexts. And Characteristics is a description of someone’s or something’s features.
2. Technically yes
(Sorry I didn’t know #3)
4. It’s a gene
