O 4. What happens to aquatic life if dissolved oxygen in water decreases? 1. There is no impact.
2. It may die.
3. It multiplies.
4. It proliferates.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?

In a copper wire, a temperature increase is the result of which of the following