4. During lactation (milk production), the suckling by the baby stimulates the production of hormone oxytocin, which in turn causes contraction of smooth muscle surrounding the milk ducts,
causing milk to flow. The flow of milk increases the suckling by the baby and more oxytocin is
produced
What is the stimulus?
What is the effector?
What is the response?
Is this a negative or positive feedback?

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

idk let me see fdfdgdg

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this