Answer:
Dolphins can be awake and asleep at the same time because:
1. one side of the brain can sleep while the other side maintains swimming and breathing behaviors.
Explanation:
As incredible as it may sound, dolphins are indeed able to sleep with only half of their brain. The other half remains awake, but less alert then when they are awake. One of their eyes remains open, and their breathing and swimming behaviors are maintained. This is particularly helpful when predators are around or when obstacles are in their way. It also keeps them from drowning.
Answer:
The global grid covers all of the Earth's surface.
A conductor of the underground railroad is called a Quaker
I think it does because people tend to shorthand words like "for" to "4" and "you" to "U." sometimes people become overreliant on stuff like that and they use it even in school or in situations where the shouldn't. grammar online is pretty bad in general too.
