Answer:
➢ In a mercury thermometer, <u>a glass tube is filled with mercury</u> and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
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A good model would be a simple plant taking in sunlight, carbon dioxide (CO2), and water (H2O). Then, releasing glucose and oxygen.
Answer:
C. Can't be observed directly
The answer is (D)
Composting helps in manufacturing of manure which is very very healthy for the plants.
Reusing , reusing plastic bags can be helpful for the environment
Recycling , can be used to convert plastic into other useful substance , which is an advantage for the environment.
Incinerating is the process of burning waste materials , due to this , there is a smoke emission which is very harmful for the environment.
Answer:
B
Explanation:
Ferns are in the group pteridophytes. These plants have a vascular system – which also means they have true roots, stem, and leaves-, however, they produce through spores (not seeds like higher plants-gymnosperms and angiosperms). Other than ferns, other plants in the group are horsetails and club-mosses. Unlike in higher plants, where the gametophyte is the dominant phase of the life cycle, the sporophyte is the dominant phase in pteridophytes and other lower plants.
