What type of bacteria produces methane

Name the types of burns one can get and which structures of the integument are damaged

What is the difference between an igneous, sedimentary and metamorphic rock

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind