Gravitational water 7. Hygroscopic water 12. True xerophytes 20.
Soil texture is based on content.
T F Ecological studies are always conducted in the natural environment and never in the laboratory. T F A frog moves into a deeper mud in the winter and enters a dormant state. This is an adaptation to cold conditions. T F Soil is the mineral material between vegetation and the parent rock. T F Succession is an important concept limited to animal ecology.