Answer:
A) It is the distance that light can travel in one year
Explanation:
A lightyear is a measure of distance used for all light in space.
Answer:
Higher food production per unit of agricultural land
Explanation:
With respect to the rate of fertilizer usage in relation to food production over the past 40 years, we can assume that we are almost getting to the limit to which Nitrogen fertilizer input can further increase food production using the same area of land. Further higher input of nitrogen fertilizer might be counter productive, and neither do lower use of Nitrogen fertilizer per unit area solve the predicted increase in demand of food in the future. The most plausible statement that represents future agricultural changes for maintaining an adequate food supply in response to growing population is “Higher food production per unit of agricultural land”. This can be achieved through other technological innovations compared to nitrogen use.
Answer:
Explanation:
The upwelling of nutrients rich water to the top will increase species numbers and diversity.
When a particular area has the ability to sustain live by providing food and nutrients required for growth of organism the population will greatly increase this is because nutrients is the major source of competition among species for survival and every species goes in search for it and where there is abundance of it there will be a rise in population and diversity.
Varying type of species that are diverse in nature comes together, mating occurs more diverse species are formed.
Answer:
The clusters of lymphatic nodules present in the inner lining of ileum is known as PEYER'S PATCH.
Explanation:
The lowest most part of the small intestine is known as ileum. In this part of intestine lymph nodules are present. Lymph nodules are small patch of lymphoid tissue inside the inner lining of respiratory system and urinary system.
These are named on the name of anotomist Hans Conrad Peyer. It is oval/round in shape and present inner lining of intestine.
They play a prominent role in immunologic responses. Like other lymph organs contain B and T lymphocytes.
