Coral and sea anemones are both
a. sponges.
b. flatworms.
c. cnidarians.
d. roundworms.

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

its temperature is increasing. this causes molecular vibrations to increase.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.