Which are causes of desertification? select three options.

global climate change
farming
deforestation
overgrazing
motor vehicles

If a robot fixed another robot is it a engineer or doctor?

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes