Males and females have been living, working, and playing side-by-side
since a young age, making it inevitable that they interact with one
another.
At school, we start to form our own gender groups where
we take an interest in those who act like we do. It is during puberty
that boys and girls start to see each other as potential dating partners
(circa awkward sixth grade school dances) because they don’t really
know one another as friends. However, when placed in these social
contexts, the sexes learn to understand and communicate with each other.
When we begin to look for friends of the opposite-sex,
or cross-sex friendships, we are seeking “chemistry”— or that special
“click” we have with someone that causes us to want to spend more time
with him or her. We like how this person makes us feel when we hang out
with them, and soon this individual becomes synonymous with fun.
The start of menstruation
In general, for most things, A would be correct (Any time of the day). It kind of depends on what you ar collecting the sample for. I think the earlier the better but it doesnt usually matter.
Every seventh time a rat presses a lever, it receives food pallets.
Answer: I believe that it is not safe because if you were to say crush it up and snort it and you thought that is wasn't working so you did another and then maybe another then you might be taking more then what you where supposed to take in one setting.
Hope it makes since.