Ndjsjdjdosixisoosxiosodjx xjsxhjsjxkaosmslwkskwksksowkdbxjsixsnnsjxosixis
Digesting of food because stomaci acid reaction makes things melt w/ enzymes
Answer:
A Type of Drink
Explanation:
A controlled variable remains constant throughout the experiment.
In such experiment, you'd test the volume of one single caffeinated drink. You'd have to use the same type of drink every trial.
Answer: iron (oxides of iron)
Explanation: manganese nodules usually contain layers of iron and manganese oxides in a concentric arrangement and are called polymetallic nodules.
????????????????????????????????????????????????????
