Answer:
they tend to run more smoothly and on schedule;
not having a human on board to deal with unexpected problems
Explanation:
I just had the same one
They could all become some sort of food for people.
Explanation: Hope this helps! :)
may i know which subject does this question belong to.
traduce esto artículo
http://www1.lsbu.ac.uk/water/cellulose.html
Mutations
I took a quiz:)