Which of the following would have resulted from the functions of prokaryotes on early Earth?
more carbon became present in Earth's soil
more nitrogen gas became present in the atmosphere
less sulfur became present in Earth's soil
more oxygen gas became present in the atmosphere

Been sitting here trying to take this test and don't know this answer! place the events of a feedback mechanism associated with body temperature in the correct order. ·nerve cells send message from skin to the brain ·body returned to normal temperature around 98.6 degrees f ·temperatures regulation center in the brain sends out signals ·body temperature exceeds 98.6 degrees f ·sweat glands throughout the body activate to cool off skin surface it is a 1 through 5 question in biology!