Answer:
300
Step-by-step explanation:
We want to estimate the population of 1000m2 but in our sample of 100m2 we found 30 organism and we know that there are ten 100m2 in 1000m2 meaning there is an estimate population of 300 resulting from 30 per 100m2 sample X 10 [which is the total number of 100m2 in 1000m2].