1.
the most complex unit of the body is the

2.
the smallest unit of the body is the

3.
groups of similar cells form

4.
a is made up of organs working together.

5.
an is a part of the body that performs a specific function.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.