#Question id: 20141
#XL - P Chemistry
#Question id: 5383
#XL - P Chemistry
12 yr ago the average age of a husband and a wife was 20 yr .The average remains the same today when they have two children. What is the present age of the youngest child if they differ in age by 2 yr.
#Question id: 11405
#XL - T Zoology
Vulnerability to extinction can be linked to species
following characteristics. Which of the following statement are correct?
A. Endemism species are more prone to extinction than fragmented
B. Species that are capable of migrating between fragments of habitat, such as between mainland areas and islands, may be more resistant to extinction
C. Population variability species are less prone to extinct
D. Species with naturally long life spans may be more likely to become extinct
#Question id: 3471
#XL - T Zoology
In a altruistic behavior occur between nephew and uncle, which of the following value of cost of donor and benefit of recipient respectively allowed to altruism?
#Question id: 12760
#XL - R Botany