Which term defines a group of cells that work together to perform a particular function? tissue compound organ organ system?

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?