Correct the false statements.
1. Microorganisms are also called germs.
2. Microbes can be useful or harmful.
3. Virus can be found in sea water.
4. The level of nitrogen in the atmosphere remains constant because of the nitrogen cycle.
5. Weeds are unwanted plants that compete with crops for nutrients.
6. To leave a field fallow means to leave it uncultivated for some time.
Answers
Answer:
I had explained you everything see bottom or down these all are correct.
Explanation:
1. and 2. Microbes are tiny living things that are found all around us and are too small to be seen by the naked eye. ... The human body is home to millions of these microbes too, also called microorganisms. Some microbes make us sick, others are important for our health. The most common types are bacteria, viruses and fungi.
3. Yes sea water has many viruses.
4. The percentage of nitrogen in the atmosphere remains constant through nitrogen cycle and various processes such as lightning etc. the percentage of nitrogen in the atmosphere remains more or less constant because of many processes such as lightning, nitrogen fixation,and of course because of nitrogen cycle.
5. They rob soil moisture and nutrients from the competing crop and decrease harvest efficiencies. Weeds also compete with the crop for sunlight. Because they are plants competing to survive in a limited space, weeds are actively removing nutrients from the soil to grow taller, stronger and healthier each day.
6. Something that is fallow is left unused. ... Fallow comes from the old English word for plowing, and refers to the practice of leaving fields unplowed in rotation — when a field lies fallow, the soil regains nutrients that are sucked up by over-planting.