1. which of the following is a small barbed harpoon organelle that contains toxins found in cnidocytes of cnidarians? planula nematocyst basal disk tentacles

Asap! how does the distance between two objects affect the force of gravity? how is the moon dependent on the sun?

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants