Which image represents a gaining of a charge on the leaves of the electroscope by induction?

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

If steel is more dense that lake water, why can a boat float