Which ecosystem is least adaptable for growing crops?

a.
sahara
b.
rain forest
c.
savanna
d.
sahel

The answer is: A. Sahara

Crops need several crucial things in order to live, including water, nutritious soil , and sunlight.  

Sahara wouldn't be able to provide enough water ( since the high temperature make water evaporated quickly) and nutritious soil for the plants,  (Sahara is consist of non-nutritious sands).

You can still grow quite a lot of crops on Rain forest, Savanna , and Sahel. Tropical fruits grow really well in rain forest, sahel is good for peanuts and peas , and Savanna can be used to grow corns and millet.

answer; severe;