Norway is the most mountainous
The correct answer for the question that is being presented above is this one: "oxygen became available from cyanobacteria." About 1.2 billion years ago, eukaryotic and multicelled organisms evolved because oxygen became available from cyanobacteria.
An ecosystem has abiotic(no living things like water and wind) and also biotic(living things) while a community is biotic things
The Mississippi river runs through 10 states in total before emptying out in the gulf of Mexico.
Thats soo easyyy
70×14= 2,800
