The number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration is known as

• Emigration

• Mortality

• Natality

• Immigration

• Immigration

In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?

• Stabilizing Selection

• Disruptive Selection

• Cyclical Selection

• Directional Selection