How good is a cat's memory span? My lil sister believes that a cat's memory is just like a goldfish's memory span. Is she 100% correct like she believes she is or is she wrong?

Biologists use the system of binomial nomenclature developed by linnaeus to assign scientific names to known living organisms which area of society or strengthened by money is contribution to science

Once a woman attains puberty, her overuse mature and release one egg per ovarian cycle. which hormone stimulates this event?

Look at the picture below . what does this picture represent ?