Are every one of the chromosomes different between men and women

What is the cause hearing loss in human being

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

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box