An astronomer observes the light of a galaxy that is 600 million light-years away. How old is the light? 1 year old

10 years old

50 million years old

600 million years old

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes