Explanation:
Physical weathering is the disintegration of rocks into smaller chunks in nature.
Water is one of the agents that causes physical weathering.
- during periods of low temperature especially the summer, water usually collects within rock cavities.
- When temperature drops, the water freezes and expands.
- Periodic freezing and thawing of ice leads to physical weathering.
- Also, in tropical regions, alternate wetting and drying of rocks occur.
- When a rock is wet, it absorbs more water and it volume expands.
- Drying occurs and it loses the water.
- This continuous process leaves cracks in rock.
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The primary roles done by these biological macromolecules in the biological processes in each organism is that contains substances that are considered as essential for these process and among which in macroscopic sizes are carbohydrates, lipids, proteins and many others.
Answer:protonema
Explanation:
Mosses have protonema that develops from germinating spores,which is a multicellular filament. This filament has high chlorophyll content and hence can photosynthesis generating food for its growth.
A protonema may produce leafy shoot and this is done under a favourable condition, this shoot later develop into bud.
DNA replication occurs during this phase
Correct answer - A (It can transfer energy though empty space.)
Why? - Transferring energy through empty space is called RADITION.
