Many cacti have roots that spread out widely, but only penetrate a short distance into the soil. In one case, a young saguaro only 12 cm (4.7 in) tall had a root system with a diameter of 2 m (7 ft), but no more than 10 cm (4 in) deep.
In other words they can't penetrate that deep.
They provide other organisms with food. got it from : https://quizlet.com/74022812/topic-test-science-flash-cards/#
1 - False
2 - False
3 - True
4 - True
5 - True
6 - False, H3O+
7 - False
8 - True
9 - False, 1x10^-7
10 - True
