How must microwaves interact with matter if they cause food and most containers to heat up in a micowave oven?

Which of the following do scientists believe about homo sapiens?

How did geographical features create a civilization in china

How does the principle of federalism affect the u.s. government? a. it guarantees that the united states will always be a representative democracy b. it ensures that the state governments have greater authority that the federal government c. it creates both separate and overlapping powers for the federal and state governments d.it divides the federal and state governments into three branches