Which of the following would be one way a farmer could increase the amount of available nitrogen in his fields without adding a synthetic fertilizer?
grow a legume crop to support the development of root nodules.
flush the field with water.
burn unwanted plants on the field.
add nitrogen gas to the fields.

Glucose is a form of sugar found in the blood cells use glucose as a source of energy, but too much or too little can cause serious health issues so, the body uses the hormone insulin to regulate glucose n the blood insulin maintain glucose levels in the blood if blood glucose lovels got very high, what would you expect to see happen to insulin levels?

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?