Which of the following characteristics do most amphibians share? O A. Amphibians lay their eggs in water.
B. Amphibians spend their entire lives on land.
O C. Adult amphibians use gills to breathe.
D. Amphibians are invertebrates.

Onsider the paragraph above. what is one chemical property of water? a) water is a polar molecule. b) water is the universal solvent. c) water reacts with group 1 metals. d) water has a high specific heat capacity.

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas

True or false most plants are c3 plants, because they use molecules of carbohydrate known as g3p in their photosynthesis process.