Answer:
Encyclopedic entry. Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up.
Answer: I think it might be C
Explanation:
Because it tell you the same info that was in the text then in the question.
Answer:
they are of the same genus but not of the same species and therefore they cannot mate to give rise to fertile off springs only organisms from the same species are able to give rise to fertile offsprings
