Convert 239 km/hr into m/min

Explanation:

we know that 1 km =1000 m and 1 hour =60 min

therefore

239 km/hr =239*1000m/60 min=3983.3 m/min

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).