Choose the correct erosive agent

It can expand and contract a rock, as a consequence it can break a big rock.
1. Groundwater
2. River
3. Wind
4. Temperatures
It takes place in caves. It can create stalactites and stalagmites.
1. Groundwater
2. Wind
3. Rainfall
4. Temperatures
It can create meanders, deltas, waterfalls, rapids, canyons...
1. Temperatures
2. Rivers
3. Groundwater
4. Sea
It can create cliffs, beaches, bays, arches... The waves carry out most of the erosive process.
1. Temperatures
2. Groundwater
3. Sea
4. Rainfal
It can carry incredibly big rocks although very slowly. It is an accumulation of ice.
1. River
2. Sea
3. Glacier
4. Wind
It carries small particles of sand in suspension. It erode rocks and can create original forms. It also creates dunes.
1. Groundwater
2. River
3. Rainfall
4. Wind