Diversity In Living Organisms — Science STD 9 — Question

Who has described the idea of evolution in book “The origin of species”?

What will happen, when we use sodium nitrate excessively in the soil?

Name a bacterium that causes ammonification.

What may be the symptoms of a disease if liver is infected?

1. P-V, Q-IV, R-III, S-II, T-I
2. P-I, Q-II, R-IV, S-III, T-V
3. P-II, Q-V, R-IV, S-III, T-I
4. P-V, Q-III, R-IV, S- II, T-I

Mention one advantage of mixed cropping.