Question

pedro is studying how living things are organized. which of the following choices is in order from least to most complex?
atom, cell, lung, tissue
atom, cell, tissue, lung
cell, atom, lung, tissue
lung, tissue, atom, cell

Explanation:

Step1: Recall biological organization levels

In biology, the organizational hierarchy from least to most complex starts with atoms (basic building blocks of matter), then cells (basic unit of life), then tissues (groups of similar cells), then organs (like lungs, made of tissues).

Step2: Analyze each option

• First option: atom, cell, lung, tissue → Lung (organ) is more complex than tissue, so wrong order.
• Second option: atom, cell, tissue, lung → Atoms < cells < tissues (cells grouped) < lung (organ, tissues grouped), correct order.
• Third option: cell, atom, lung, tissue → Atom is less complex than cell, wrong start.
• Fourth option: lung, tissue, atom, cell → Most complex (lung) first, wrong order.

Answer:

B. atom, cell, tissue, lung (assuming the second option is labeled B; if labels were A - D as per typical multiple - choice, with the second option being, say, B, then the answer is B. atom, cell, tissue, lung)