(Q).
Chemical weathering causes iron in rock to oxidize, and fe is the periodic symbol for Iron. Given these facts, chemical weathering causes what in rock to oxidize among the following options: - Fe - tar - h2o - H20 - DDT - Ag - O - CO2
(A).
Fe

(Q).
Electrical current running through a wire causes that wire to heat up, and when the wire is moved across the magnetic field, it creates an electric current. Given these facts, what happens when a wire is moved across a magnetic field among the following options: - unidirectional - the wire heats up - deoxyribonucleic acid - permineralization - electromagnetic energy - activation energy - An object is seen - direct energy
(A).
the wire heats up

(Q).
Exercise increases a body 's strength, and exercise is more than running and lifting. Given these facts, what increases a body's strength among the following options: - in its arms - Through play - heat energy - joules - Riding a bike - cancer - running and lifting - parasites
(A).
running and lifting