2. Jessie studies seaweed and she usually takes large amounts of samples. She would take
these samples from only one place and bring them back to the laboratory to run tests.
(a) Based on this information, predict what would occur if there were many separate teams
of scientists just like Jessie, who focused on the same area to collect seaweed samples.
(b) What alternative would you suggest to Jessie in order to avoid disturbing the stability of
the system in the place she collects her samples?

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

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?

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.