the half-life of 14c, a radioactive isotope of carbon, is approximately 5,700 years. the ratio of 14c to 12c in a fossil 30,000 years old would be that of a living organism today.

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

sex cells are usually half's then they find another half and make a fertilize egg