Ineed catching up my assignments.

1. there is less oxygen in density currents than in surface currents.

true or false?

2. which pair of factors would both cause salinity to increase?

a: freezing of sea water and precipitation
b: melting sea ice and evaporation
c: evaporation and freezing water
d: precipitation and melting sea ice

3. sinking volcanic islands and developing coral reefs are related to the formation of

a: deep sea trench
b: abyssal hills
c: atolls
d: manganese nodules

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return