Answer:Phase change materials (PCM) are substances that absorb and release thermal energy during the process of melting and freezing
Explanation: when it cools it changes like ice melting
The Russian ruler that enlarged the Russian empire is Ivan IV the terrible.
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Answer:
By declaring the NRA and the first version of the Agricultural Adjustment Act (AAA) unconstitutional.
Explanation:
The supreme court pose the challenge to Roosevelt’s New Deal programs by declaring the NRA and the first version of the Agricultural Adjustment Act (AAA) unconstitutional. Eleanor Roosevelt became a key voice inside the White House for appointing women to positions in the administration during the New Deal. In that way First Lady Eleanor Roosevelt played the role during New deal.
