Describe three human activities that may make slopes unstable

Three human activities that may make the slopes unstable are the following:

1. Deforestation

Cutting off trees may result to loose soil since there will be lesser roots that will hold the soil together. When rain water runs off the slope, it will make the slope more unstable, resulting to mud/land slide.

2. Water excavation/extraction

This may also result to unstable slope, because the soil may sink as more water is extracted from the ground to supply the need of the growing population. In extreme cases, this may result to the formation of sinkhole.

3. Drilling of the earth
  
Drilling may result to unstable slope if is done in a landslide prone area as it will disturb the formation of rocks and soil. 

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

~wikipedia

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!

Thermal energy is the total potential and kinetic energy of the particles of an object