What would happen to the ecosystems if there were no Nitrogen-fixing bacteria?

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

In 2002, the rare earth elements mine in mountain pass, california was closed because