At this location, existing rock from the crust moves deeper into the Earth, cycling matter from the crust to the mantle. mid-ocean ridge
oceanic-oceanic convergent boundary
subduction zones
transform boundary
divergent boundary
continental-continental convergent boundary

the role of the microscope world in creating new materials .

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

answer; natural resources;

the answer is minerals.