Organic matter in soil is also called humus.
Biomass is the total mass of a specific organism in the area. If there is a negative value of change in shoot biomass, that mean the mass of the shoot in this period are less than before. This indicate increases in predation/death which reduce the population of the shoot more than its growing rate. The cause could be an increases in predator population or decreases in food/resource.
Answer:
The flower will be pollinated by wind so #1
Sensations are affecting perception because sensations are related to what you want. the more you want it the more it is harder to resist it
