DOWNLOAD NCERT

NCERT HISTORY OLD ANCIENT INDIA Click to viewDownload Medieval India Click to viewDownload Modern India Click to viewDownload History TN 11th std Click to viewDownload History TN 12th Std Click to...
CONGO FEVER

CONGO FEVER

CONGO FEVER According to the US-based Centers for Disease Control and Prevention, the virus was first reported in Crimea in 1944 and then later in Congo in Africa in 1969. Symptoms are similar to those of common viral fevers such as headache, back pain, joint pain,...
IMMUNITY PASSPORT

IMMUNITY PASSPORT

IMMUNITY PASSPORT These are handed out to those who have recovered from COVID-19 for the purpose of travel. Immunity passports are also known as ‘risk-free certificates. According to the World Health Organisation, use of such certificates could lead to the risk of...
HERD IMMUNITY

HERD IMMUNITY

When a high proportion of a community is immune it becomes hard for diseases to spread from person to person. This phenomenon is known as herd immunity. Herd immunity protects people indirectly by reducing their chances of coming into contact with an infection. Herd...
GAUSE’S LAW IN ECOLOGY

GAUSE’S LAW IN ECOLOGY

Also known as the competitive exclusion principle, this refers to the proposition that the populations of two competing species cannot remain at stable levels over time. When two species compete for control over a limited amount of resources, the dominant species will...