Climate change and natural hazards reshape political stability, migration, and economic development through three intertwined effects: displacement, strain on resources and services, and disruptions to agriculture and livelihoods. When people are forced to move, whether within a country or across borders, local economies face labor shortages, housing pressures, and potential social tensions that test governance and stability. Scarcity and price swings from droughts, floods, or other shocks can fuel protests, alter political dynamics, and push governments to respond with policy action. Agricultural disruption undermines food security and incomes, affecting development trajectories and prompting investments in resilience. These pressures also drive policy decisions and new investments in disaster risk management, climate adaptation, and infrastructure, which can redirect economic development in significant ways. Saying climate effects are irrelevant to migration or politics or that they only improve development misses how these realities actively shape stability, movement, and growth.

Biomes are large ecological regions defined by their climate and the communities of organisms that thrive there. The climate—patterns of temperature and precipitation—shapes which plants dominate and, in turn, which animals can live there, so a biome represents a broad, recognizable system that includes many ecosystems with similar conditions. It’s bigger than a single species’ habitat, and it isn’t about political boundaries or rainfall measurements alone. The best description is a large ecosystem characterized by a distinctive climate and communities of organisms.

The main idea here is blending diverse groups into a single shared culture. This is described by the melting pot concept, where people from different backgrounds come together and adopt a common language, norms, and identity, forming one culture. The other terms describe different ideas. A mosaic means distinct cultures coexist within a society while keeping their own identities, rather than blending into one. Globalization refers to the growing interconnectedness of people and cultures around the world, not specifically about assimilation into one culture. Economic globalization focuses on trade and economic integration globally, which also isn’t about cultural blending.

Understanding immigration categories by their purpose helps you see why skilled workers and businesspeople fit the economic focus. The Independent/Economic Class is set up for people who can contribute to the economy—through filling labor market needs, starting businesses, or bringing specialized skills. Selection usually looks at factors like education, work experience, language ability, and potential for economic self-sufficiency, aligning entrants with economic goals. Refugees are defined by the need for protection from danger, family class centers on reuniting relatives, and multiculturalism is a policy framework rather than an immigration category focused on economic contribution. Because the question highlights the ability to contribute to the economy, the Independent/Economic Class is the best match.

Fossil fuels come from organic material that lived long ago and was transformed by heat and pressure over millions of years. Coal fits this idea perfectly because it forms from ancient plants that grew in swampy areas, were buried, and, under geological heat and pressure, transformed into a dense, carbon-rich rock. That long process of transformation is what makes coal a fossil fuel derived from ancient plant matter. Nuclear power, on the other hand, relies on splitting atoms and is not tied to ancient plant matter. Biomass energy uses living or recently living organic material, such as wood or crop waste, not material that has fossilized over millions of years. Geothermal energy comes from heat inside the Earth, not from plant remains.