1 kg of cold water at 15°C is mixed with 1 kg of warm water at 31°C. What will be the final temperature of the water, in °C?

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

When the mercury level in a barometer decreases that atmospheric pressure has

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.