How do greenhouse gases contribute to warming Earth's surface?

What atmospheric change results when coal and natural gas are burned for electricity?

Use the illustrative graph. How does the final year's temperature compare with the reference average?

Which long-term observation supports evidence of a warming climate?

Which pair of processes helps explain why warmer conditions can increase coastal flooding?

How can rising sea level make wells in a low-lying coastal barangay saltier?

What chiefly causes the long-term fall in seawater pH linked to human emissions?

After working outdoors in extreme heat, a farmer becomes confused and has a body temperature of 40.5 °C. Which condition best fits these signs?

Two rice plots have the same variety, soil and fertilizer. During drought, only one is irrigated and produces more grain. Which conclusion is best supported?

Which carbon-cycle change follows clearing and burning a forest?

Which hazard is classified as rapid-onset?

Which record best supports treating a barangay's coastal erosion as a slow-onset threat?

A storm-surge warning is issued. All three shelters are structurally sound and accessible. Which location should officials prioritize?

During Yolanda, seawater surged into parts of Tacloban. What mainly drove this coastal flooding?

Which hazard is mainly geological rather than climate-related?

A barangay plans housing intended to last 50 years. Which information should most strongly guide its location to reduce future coastal-flood exposure?

A Philippine town has hot water reservoirs deep beneath a volcanic area. Which electricity source could use this resource?

An island school installs photovoltaic solar panels. Which energy conversion occurs in the panels during electricity generation?

Compared with coal-fired power, what is a main climate benefit of electricity generated by wind turbines?

A household uses a 60 W incandescent bulb rated 800 lumens. Which replacement gives the same rated brightness while reducing electricity demand?