Answer:
D
Explanation:
a statement that can be tested through a scientific investigation
Maintenance of a consistent body temperature
The outer skeleton provides protection due to the fact that invertebrates do not have backbones
<span>example - Charophytes <span>Land plants are the descendants of green algae. The closest living relatives to the ancestors of land plants are the __________, a freshwater algae that has left an extensive fossil record.</span></span>