Which answer below correctly identifies the type of change in the explanation for the heating of copper sulfate pentahydrate

Iknow the answer is a but i don't know why

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space