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Bio-fertilizers
Author :
Adriana
1.
What is a fertilizer?
A
These are substances that are only produced in a laboratory
B
Substances used as feed for animals
C
They are substances rich in plant nutrients
2.
How are fertilisers classified (according to their origin)?
A
Chemical and organic fertilizers
B
Chemical, organic and bio-fertilizers
C
Organic fertilizer
3.
biofertilizers cause any soil damage
A
yes
B
no
C
I don´t care
4.
Main nutrients in the soil
A
F, O, K, Au
B
K, N, P
C
He, N, Al
5.
effects of fertilisers on the soil
A
dead
B
There are none
C
erosion, desertification, eutrophication
6.
the second most produced seed in Mexico
A
Marijuana
B
Bean
C
Corn
7.
what is eutrophication?
A
a conspiracy theory
B
that's not a thing
C
excess of nutrients