Which describes a promoter?
A .the first part of an operon that regulates where, when, and to what level a gene is expressed
B. the part of an operon that, if attached by a repressor protein, suppresses the expression of a gene
C .a cluster of genes that are expressed or repressed as a group
D .an enzyme that helps DNA unzip prior to transcription

i believe the answer is snake.

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!

for a different answer set the answer would be because the oxygen in the water had depleted (apex)