It is because of shadow. A stadium floor usually isn't at ground level. It can sometimes be 30-60 feet lower. If the sun isn't directly overhead then the field can be in shadow making it difficult to...
It is NEVER, EVER okay to have a male in with a birthing female, or in with one that has already birthed! It is HIGHLY likely that he will, or will cause the female to kill and eat the hoglets!...
The simple answer is yes. A balanced aquarium should contain water plants and these need light in order to live and grow. If your aquarium is a tropical one then the lights should be on for around 12...