"Amphibia" Means Double Life,which Refers to Amphibians Dividing Their Lives

"Amphibia" means double life,which refers to amphibians dividing their lives between water and land.Which of the statements below accurately reflect how the skin promotes this double life or how it limits the extent to which amphibians can become fully terrestrial? Check all that apply.

A) Scales,warts,and epidermal thickenings that would prevent water loss and promote a more terrestrial lifestyle never occur in amphibians.
B) The skin is very glandular,which helps keep the skin moist.Granular glands secrete toxins that help protect amphibians from predators.
C) The skin is usually very thin and lacks insulating qualities.In water,an amphibian usually takes on the temperature of its surroundings.Out of the water,the thin,vascular skin can quickly warm an amphibian basking in the sun.
D) The thin,moist skin helps us understand why most amphibians are nocturnally active.Even reproductive activities often occur at night.
E) Amphibians on land usually posture themselves erect on all four appendages to promote cooling or warming across their thin skin.
F) Amphibians can remain submerged for long periods,almost indefinitely,because respiratory gases are exchanged across their thin,vascular skin.