Invertebrates with "spine skin" are which would include animals like cnidaria; mollusca; echinodermata; porifera/ starfish; jellyfish; sponges; clams

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used