In which sealed container would the organisms be able to continuously cycle O2 and CO2 gases? A. A terrarium with tadpoles and a pool of water

B. An aquarium with fish and plastic plants

C. An aquarium with rocks and snails

D. A terrarium with a plant and a snail

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

transformative rocks are the stones that emerge from the transformation of existing rock composes in a procedure called changeability, implies changing of structures. transformative rocks are shaped from alternate shakes that are changing a result of warmth or weight connected. one of this model is the earth developments that making rocks profoundly cover or crushed which will make the stones warmed and put under awesome weight. they are not softening but rather the minerals they are containing are changed synthetically that will shape transformative rocks. now and again different rocks are shaped when the others are near some liquid magma and getting warmed.