In the early cambrian, there was little tectonic activity in virginia and sediments were deposited along the continental margin. the deposition of sand, silt, and other clastic materials was gradually replaced by the deposition of limy sediments in the warm tropical waters of the iapetus ocean. if we were to look at the layers of rock dating back to this time period, we would expect to see

I just did this on USATP and its A) limestone layered over sandstone and shale

answer: the answer is b

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!