The answer you are looking for is “Drought”.
Answer:
option a
Explanation:
because When hydrogen is used to power a fuel cell, the only byproducts are water and heat—no pollutants or greenhouse gases are produced.
Threats to our native temperate grasslands include clearing, nutrient enrichment, inappropriate grazing, altered burning practices, neglect, fragmentation, tree planting and the invasion of exotic weed species like Serrated Tussock, African Lovegrass, St John's Wort and Phalaris.
Idk try to help me too lol
