Earthworms are delicate. Careful handling is important to
avoid damaging the internal organs.
Place the worm with the dorsal side up. Start the dissection
2 centimeters posterior the reproductive segment. Snip the skin above the dorsal blood
vessel ( near the posterior pin) through
the septa to the mouth.
Answer:
Answer is C. Modern irrigation.
Explanation:
The word 'irrigation ' means the process of supplying water or watering of land in preparation for planting and watering of planted crops to survive.
Modern irrigation involves the construction of hoses, channels and canals. This is done so that water will be available through out the seasons for the crops, and water will be supplied to areas where there is scarcity of water.
Irrigation is very important because it prevents famine, improves water condition in the soil by dissolving nutrients for plant use.
Answer: Plant cells can be larger than animal cells. The normal range for an animal cell varies from 10 to 30 micrometers while that for a plant cell stretches from 10 to 100 micrometers.
Answer:
In developing countries children are needed as a labour force and to provide care for their parents in old age. In these countries, fertility rates are higher due to the lack of access to contraceptives and generally lower levels of female education
Explanation: