Allen read that the gas company was burying sheets of magnesium next to pipelines to prevent rusting. He decided to investigate the effectiveness of various metals in preventing rusting. He placed the following
into three separate test tubes of water: A) Iron nail B) Iron nail wrapped with aluminum strip C) Iron nail
wrapped with magnesium strip. He used the same amount of water, equal amounts of the metals and the
same size iron nails. At the end of five days he recorded the amount of rusting on the nails and the color of
the water.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

What are the proteins in connectivity tissues of your foot examples of?

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.