Why are transitional fossils important? A The fossils have structures that are similar but developed in different ways like birds and bats.
The fossils show traits that connect distinctly different groups of organisms, and give a "snapshot" of how evolution can create major changes.
The fossils are genes that show transitional time between current and past generations, showing evolution.
Helps to transition from fossil fuels to green energy.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

Ascientific idea becomes valid when it is what?

Who discovered tuberculosis bacteria?