Pine trees have cones instead of flowers, and their seeds are unprotected. what structure are pine trees most likely missing? roots leaves fruits stems

!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.

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury

What happens to the amount of waste in the pond as the ecosystem ages?