How do I explain sea level rise clearly in IB Geography?

Start by separating the two causes: melting land ice and thermal expansion. Examiners reward clarity when you identify both and then describe how each contributes to higher sea level. Next, add one or two coastal impacts, such as erosion, saltwater intrusion, or the loss of wetlands. After that, scale it by naming the most exposed environments: deltas, low-lying islands, and coastal plains. Then include a short note on vulnerability, because the same sea level rise produces different outcomes depending on income, planning, and infrastructure. Finally, end with a sentence on adaptation limits, because not every coastline can be protected indefinitely.

Why do ecosystems respond so strongly to small temperature changes?

Many species are adapted to narrow temperature ranges, so warming can push them outside their optimal conditions quickly. In IB Geography, it helps to describe temperature as an environmental control on distribution, breeding, and food supply. When temperatures rise, some species shift their ranges, but barriers like mountains, fragmented habitats, and slow reproduction can prevent movement. Timing can also break down, such as when insects emerge earlier than the birds that feed on them. Coral reefs show how stress can trigger abrupt ecosystem decline through bleaching. A strong answer ends by noting that biodiversity loss reduces ecosystem resilience, making future shocks more damaging.

What’s the best way to write about extreme weather without exaggerating?

Be precise: climate change doesn’t “create” every event, but it can increase the frequency, intensity, or likelihood of certain extremes. In IB Geography, focus on mechanisms you can explain in one or two sentences, like warmer air holding more moisture or higher evaporation drying soils faster. Choose two extremes rather than five, and link them to environmental impacts such as wildfire risk, reduced agricultural productivity, or flooding. Add a quick comparison of regions, because impacts vary with exposure and coping capacity. Avoid absolute language and instead write about trends and increased risk. That balance reads more analytical and earns more credit.