Dina is walking 0.5 m/s forward on a train traveling at 8.0 m/s north
what is Dina's velocity relative to the ground?

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city. 

Individual rights and freedoms protect every person in canada whether they're citizens or not. the only right, non-citizens don't have is the right to vote.