Aheterotrophic multicellular organism that does not have cell walls is called a(n)
a. animal
b. plant
c. virus
d. bacteria user: a sponge can drop a piece of itself on to the floor of the ocean and the little piece then grows into a new individual. this is an example of
a. sexual reproduction
b. excretion
c. budding
d. regeneration

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600