Astudent wants to experimentally determine the density of water in the lab, explain the measurements the student will make , the lab apparatus lequipment she will need to determine the density of water .

Show an image of the data (˵¯͒ བ¯͒˵)

Hi + naoh -> h2o + nal

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.