There are three main types of symbiotic relationships: mutualism, commensalism, and parasitism. Which statement depicts commensalism? Defend your choice 1. The tick derives benefit while the dog is harmed. 2. Only one animals, the remora benefits. The shark is not hurt or helped. 3. The mosquito sucks the blood from warm-blooded animals and possibly transmits disease. 4. The elephants supply a food source by allowing the birds to eat parasites and other bugs from their skin.

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.