Imagine that you flick a light switch, but it fails to turn on. What could cause this malfunction? Help please

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.

Why are human population trends difficult to predict?

Are humans interfering with or a part of evolution happening today? find examples of evolution seen in recent history that could be caused by human activity.