Answer:
The correct option is;
A. If snack are wrapped in aluminium foil, then the snacks will not be eaten by seagulls
Explanation:
It has been observed severally that birds including seagull tend to avoid shiny objects. As have been proven by research, birds are not drawn towards shiny materials and shiny articles can be used to scare off birds. Articles like CDs, plates of aluminium and tinfoil and be arranged so as to be glaring in order to ward of the birds
Similarly, placing shinny articles around a property keeps away.
Answer:
This means or refers to the fact that the fungus that colonized the bathtub takes the acid juice as its metabolite, and the water does not eradicate it.
Explanation:
To eradicate the fungus, a non-selective antimicrobial such as sodium hypochlorite will be necessary, accompanied by a mechanical sweep such as brushing.
In certain climaxes, where humidity predominates and there are soapy substances, some fungi usually colonize, with the ability to proliferate on inert surfaces.
These fungi can trigger infectious pathologies in humans, some if others not, but the indicated thing would be to eradicate them completely.
Bacteria can be beneficial. The example of how bacteria are beneficial is that they A. break down cellulose in some animals' digestive systems.
Answer:
increasing soil erosion.
Explanation:
Mining for mineral resources is an intensive task that involves disturbing and disrupting the lands where the minerals are found. The process of mineral exploration and eventual mining cause great disturbances to the affected land and one of the damages done to such land is great increase in soil erosion.
Answer:
D
Explanation:
Sample D will undergo the fastest rate when subjected to chemical weathering.
What is weathering?
- It is the physical disintegration and chemical decomposition of rocks to form sediments and soils.
- Physical weathering is also known as mechanical weathering. It entails breaking rocks into smaller sized chunks.
- Chemical weathering is the decomposition of rocks by chemical action.
From the given choices, option D will have the largest surface area exposed to chemical actions. It has more surface area compared to the others. The more broken a mass is, the more its surface area is.
Reaction rates are affected by:
- Increase in surface area
- Increase in temperature
- Higher concentration
- Increase in pressure
The last cube has the highest surface area and will have the fastest rate of weathering.
