Dualmine mining in the Cloud is this a ponzi scheme?What do you think?

HELLO ALL I WANT TO MAKE A REVIEW ON A FACT CURRENTLY HAPPENING ON INTERNET UNFORTUNATELY PREDICTABLE BECAUSE THERE ARE MANIFESTLY MANY ERRORS AND VISIBLE SIGNS IN THE WEBSITE.
FIRST I’D LIKE TO ASK:

HOW CAN A CLOUD MINING COMPANY ALLOW YOU 350% OF YOUR STARTING INVESTMENT?

HOW CAN A MINING COMPANY ALLOW YOU FIXED MINING REWARDS OVER 2 YEARS WITHOUT ANY DIFFERENTIAL CHANGE?