17. Why do decomposers have such important roles in the food web? *
1 point

a. They can recycle energy back into the ecosystem
b. They clean the highway of road kill
c. They make the nutrients found in dead organisms available to other organisms in
the ecosystem
d. They have the important job of producing carbon dioxide as they feed on dead
organisms

Help me this is a test grade pl

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

Coal contains energy. a. light b. kinetic c. chemical d. mechanical