Coal, as we cannot easily produce more of it.
Answer:
The atmospheric pressure goes on decreasing as we go up above the sea-level. Therefore, the amount of oxygen also decreases at higher altitude. Due to this reason, mountaineers carry oxygen cylinders with them, while climbing high mountains
Explanation:
Answer:
Enables the species to rapidly colonize habitats that are favorable to that species
Explanation: That is an example of asexual reproduction
Answer:
pollutants are transported by are from Eurasia
Explanation:
To reduce erosion and to get rid of pesticides on farms