Cells are often referred to as the building blocks of life. How does this investigation support that statement?

Often referred to as “the building blocks of life,” cells are the biological, structural and functional units that carry out tasks in an organism. A collection of cells working together is called a tissue, while a series of tissues performing organized functions are called organs.

Explanation:

the answer is d (apex) good luck : ))

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.