The answer is
B........................................
The correct answer is 'If molecules are small enough, then they can pass through the semipermeable membrane because they can cross the semipermeable membrane from their small pores or openings'.
The semipermeable membrane is permeable to few molecules, and the smaller molecules pass through the molecules from small pores present in the semipermeable membrane. The size of the big molecules are large, so, they cannot cross through semipermeable membrane.
Divergent evolution is when two different species share the same ancestral origins but have evolved differently whereas convergent evolution is when species with different ancestral origins have developed similar features.
In convergent evolution, two species that are not necessarily closely related develop similar features often as a result of adaptation to similar conditions.
Answer:
Crop intensification can be defined as the methodologies/procedures used to increase crop productivity (i.e., food, biofuel, fiber) in the same unit of land. These methods include relay intercropping, successions crops and the use of organic materials in order to increase the fertility of the soils (and therefore plant growth)
Explanation:
Crop intensification refers to the techniques used by farmers around the world aimed at increasing crop productivity (for example, wheat yield, cotton fiber production, etc.) These systems of crop intensification mainly include relay intercropping and successions crops, which increase the fertility of the soils (especially after oilseed crops) and crop resilience to climate change. The addition of organic material may also result useful to increase the plant growth (i.e., crop production) and agricultural sustainability by minimizing available resources such as, for example, water availability, chemical fertilizers, etc.
Answer:
Option (2).
Explanation:
Ecological succession is the change in the ecological community of the species with respect to time. Two types of the succession are secondary succession and primary succession.
The ecological succession includes various transitional stages before reaching to the climax community. The simple species acquires first and then the climax species is reached at the end of the succession. Different changes are involved in the formation of climax community.
Thus, the correct answer is option (2).
