A population of jaguars start with 100.Within the year, 50 jaguars; 30 jaguars die,20 immigrate, and 10 emigrate. What is the final population after a year

Ascientist observes certain changes in the physical features of a particular species over time. she concludes that the species has undergone evolutionary change. she wants to study the animals by analyzing their population. she’ll use . the population of this species is decreasing considerably. if this trend doesn’t change, this species will fall under the category of animals. this is a plato question,i need to make up his biology credit.