Andrew gathered several different species of seed plants. Which three characteristics do all the plants most likely share? have pollen and flowers; lack phloem have pollen and rhizoids; lack xylem have xylem and phloem; lack pollen have xylem and phloem; lack rhizoids

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

What was the first instrument to ever record an earthquake?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?