5. Fill in the blank:
In general, as prey numbers go
_(up/down), predator numbers
I
go
(up/down). When there are many predators, the number of prey
(increases/decreases).
How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000