You are told by your science teacher to set up an aquarium as a mini ecosystem. Which of the following are needed in setting up your aquarium A. Fish and water only
B. Water, sand and light only
C. Fish, snails, and plants only
D. Water, sand, soil and sunlight only

i think the miocene epoch spans the time from 23 million to 12 million years ago.

the form of energy changes and the total energy increases0l

make   gliitsh plesea   !

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.