After reading about the Malaria problem in North Borneo and the subsequent attempts to eliminate it, do you believe the beneficial effects of spraying pesticides on Sabah outweighed the resulting unexpected and harmful effects?
Fungicides account for 1/10 of the pesticides used in the US. Insecticides account for 1/4 of all pesticides used in the US. The two ratio of herbicides to insecticides used in the US can be written 1/10 ÷ 1/4 . Write this ratio in …
The number,n (in hundreds), of mosquitoes in a camping area after t weeks can be modelled by the equation n(t)=2t^4-5t^3-16t^2+45t According to this model, when will the population of mosquitoes be greater than 1800?
The population of a colony of mosquitoes grows exponentially according to the function P(t) = P0ekt 1. If there are 1,000 mosquitoes initially and there are 1800 after 1 day, what is the size of the colony after 3 days?