All of the following have only one opening into their digestive system except:
a. corals
b. jellyfish
c. roundworms
d. sea anemones

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater

What is the difference between bacterial infections and viral infections?

Which of these statements are true about scientific theories and hypothesis