Answer:
i think its B
Explanation:
but check it before do it
30x30=900
The answer is 900 meters after 30 seconds
<span>Tree's are vital to the eco-system, they clean the air of co2 which is important for the air and water. Tree's also stop erosion and that is an important step in keeping our water clean. Tree's filter water up through the soil with their extensive root system, making for clean water.</span>
