Plant spacing trials are vital in determining which of the following ? • life expectancy of the plant
• Optimal plant spacing
• The best soil type for a plant species
• Whether a plant in germinate

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an