Check the boxes next to each sentence that describes some way a scientist might collect or organize data.

A. A marine biologist measures the lengths of the dorsal fins of a number of tiger shark:  In this case, the biologist needs to sample the sharks, make measurements and organize in tables the data obtained from the two variables measured in each of the analyzed individuals.

C.An ornithologist, a scientist who studies birds, draws a sketch showing the colors of a bird’s plumage.

in this case the ornithologist had to make observations of birds of different species and through schemes report and organize according to the species what color of plumage they have.

D.An ecologist uses a computer to make a graph of the measurements of the rings of a tree:

The graph is the way in which the scientist systematizes the data for the analysis of the tree rings. these trees had to be sampled

Explanation:

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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