Adaptations for water in fish include
a. several fins for swimming.
b. a system of muscles for movement.
c. gills that allow them to “breathe” oxygen in water.
d. all of the above

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Which process moves molecules and has these traits? -moves from high concentration to low concentration -moves from uneven distribution to even distribution -can occur when there is no membrane o o active transport in a cell diffusion osmosis o passive transport in a cell